So when she allows this incredible rarity to Gimli, she essentially gives him the three hairs that
Galadriel denied her hair to Fëanor because she knew the greed in his heart would never change. By gifting Gimli three hairs instead of the one he asked for, he proved a point that spanned back to the First Age.
It may be related to their intention to play up the discord between Boromir and the rest of the Fellowship and the mistrust Galadriel feels toward him specifically. That angle is heavily emphasized throughout the film.
In the Fellowship of the Ring Gimli asks Lady Galadriel for a single strand of her hair. She then honors him with three.
As Ernest, Abhijeet, Ravin and James have eloquently argued, the relationship between Galadriel and Gimli was one of mutual platonic admiration. After all, Galadriel was married to Celeborn, her husband and junior co-Guardian of Lothlórien.
Fans know from the later Lord of the Rings and The Hobbit tales, that Galadriel eventually finds, falls in love with, and marries Celeborn, the elf who accompanies her down the stairs when the fellowship first arrives in Lothlorien.
In The Silmarillion, Galadriel and Celeborn meet in the First Age of Middle-earth, in the elven realm of Doriath. They marry and have children, including their daughter Celebrían, who goes on to marry Elrond and give birth to Arwen.
The post goes on to suggest that Galadriel gave him the hairs because, ironically, the dwarf didn't want the hairs as a physical thing for himself. Rather, he wanted them as symbols of new friendship between elf and dwarf.
Gimli and the other Dwarves lived in the kingdom of Erebor and, since Erebor was far away from Moria, news would have been slow between the two kingdoms. The journey to Moria was dangerous, so many messengers could have died going to or from there.
Galadriel has very strong magical powers, and she is said to be the greatest of the Ñoldor after Fëanor. The majority of her powers come from her Ring of Power, Nenya, the Ring of Water.
Though Gimli has no children, he is not the last Dwarf of Middle-earth. After the fall of Sauron, his people continued to thrive in the Lonely Mountain. Gimli made his home in Rohan, in the Glittering Caves of Aglarond, and many of his kinsfolk came with him.
Galadriel's rejection of Sauron clears the way of Celeborn's return. But we're going to need some idea of where he's been since he was lost in the war against Morgoth. It's strange that Galadriel spoke so often of her dead brother but only once about her dead husband.
Sauron wants Galadriel to become his queen because she's useful, says Vickers. As he's already shown, Sauron can accomplish his objectives much more quickly when he has a highly regarded Elf warrior to get him into places like Numenor and Eregion (where Celebrimbor lives).
From TA 2989 to TA 2994, the re-colonization of Moria was an attempted expedition led by Balin to re-take the ancient Dwarven Kingdom of Khazad-dûm. An initial effort was successful in reclaiming some of Moria from the Orcs.
Either way, Gimli of course takes offense at this, and replies with "Ishkhaqwi ai durugnul" which means "I spit on your grave" in the common tongue.
Balin's Relationship with Gimli
Balin is the cousin of Gloin and the third cousin of Gimli. Gimli is a central character in the The Lord of the Rings trilogy. He is a warrior who is the son of Gloin, a member of Thorin's company in The Hobbit.
In the Mines of Moria, the Company discovers what has become of them: Balin, Lord of Moria, died in Dimrill Dale when an Orc shot him from behind a stone as he stood looking in the Mirrowmere.
He had been through Moria (more than once), but if memory serves he had only gone East to West, never West to East. So when he came to this place before, he may not have realized it was a fork in the road as he was coming out if the fork, not into the fork.
There had been no communication from Moria for quite some time, but no one knew exactly what had happened there, or why the colony had gone silent. Gandalf definitely did not know about the Balrog, or even about the orc attacks that had sent Balin and all who were with him to an early grave.
Arwen was her granddaughter
Galadriel and Celeborn had a daughter named Celebrian, who married Elrond and became the mother of Arwen (as well as her brothers, Elladan and Elrohir).
Before the Company of the Ring left Lothlórien, each of its members was presented with a gift by Galadriel. Boromir was given a belt of gold which he carried in the journey until the Breaking of the Fellowship. When Aragorn, Gimli and Legolas laid him in his burial boat, the golden belt gleamed about his waist.
Through her great-grandmother, Idril, Arwen was also a descendant of King Turgon of the Noldor. Through her mother, she was the granddaughter of the Elf-queen Galadriel of Lothlórien, and the great-granddaughter of Finarfin.
Yet, since Tolkien does give family trees for other important Elves in the book, such as Galadriel and Elrond, it's clear that Galadriel is not Legolas's mother. (Besides, she is one of the Noldor, not a Silvan or Sindar Elf.)
She already feels an outcast after Gil-galad tried to send her back to the Undying Lands, and she fears that if she reveals what she has done, it will be the final nail in the coffin. Instead, when Elrond pulls her from the river Glanduin, and she races back inside to Celebrimbor's forge, she chooses to stay silent.
Thus, Galadriel's dark form in Jackson's The Lord of the Rings personified what would have occurred had the Lady of Lothlorien given in to temptation and taken the One Ring for herself. She would have succumbed to evil because the Ring was indomitable, even with her power.