Short answer? No. It's been clear that the main issue had to do with Anakin's mental state. If Anakin just got the help he needed and stayed loyal to the Jedi Order, overcoming Palpatine's evil temptations, Padmé would've survived.
Had Anakin not converted: Padme would have been killed by the Emperor before childbirth, and before Anakin and Obi wan returned from the mission to destroy general Grievous. Regardless: order 66 probably still would have happened since the army was under control of the dicator in Palpatine.
We go for the more simple answer, further considering the details of the question itself. If Anakin didn't go into that chamber as the Jedi confronted Palpatine, then Mace Windu would have defeated Palpatine, killing him.
While Force healing could have saved Padmé, material from both continuities explains why Anakin couldn't use it. The Force is a fundamental omnipresent energy that can be used as “powers” by those who are trained to tap into it. One such power is healing oneself or another at an enhanced speed.
So overall, it seems highly likely that the answer is no, Palpatine didn't have the power to save Padmé's life. He hadn't even begun learning the power when Anakin became Darth Vader, and the idea of saving lives was of no interest to him.
Anakin does not have even the slightest bit of remorse. By the end, he feels nothing but anger. Although he feels regret for killing Padme, he still helps the evil Emperor. The film ends with Anakins standing side by side with the man on whose behalf he has committed all his crimes.
Vader agreed to help the handmaiden, silently recalling the time he spent with Padmé in the process. In this moment, he was once again Anakin Skywalker, a young man in love who simply wanted to change the world for the better.
Darth Vader awakens, and his first question is about the whereabouts of Padmé. Palpatine tells Darth Vader that in his anger he killed her, placing the blame for Padmé's death on Vader. Vader denies it, saying he sensed Padmé was still alive, which the audience knows she was as Obi-Wan escaped on the ship with her.
The short answer is yes, without a doubt, Vader regretted becoming a cybernetic monstrosity. First, there's the constant pain and discomfort from his suit. Worse, however, is the psychological pain. Vader destroyed everything he had ever known for a chance to save Padme.
After Padme died, Anakin had already fully committed to the dark side. Even if he still desired to do good, his anger had corrupted him to the point of no return.
Qui-Gon Jinn, who is considered a maverick Jedi Master by his colleagues, might have been able to keep Anakin on the path of the Jedi, had he not been killed by Darth Maul. Star Wars' Qui-Gon Jinn would have been the ideal mentor for the young Anakin.
Anakin would have become 10x more powerful than Vader if he hadn't turned to the dark side. Turning to the dark side is a weakness, because only the weak cannot resist it.
Although the decision to turn to the Dark Side was Anakin's alone, the choice did not come from thin air. His natural prone to impulsivity and emotion without the support systems he needed in place made it easier for Anakin to stumble down a path of darkness.
The question is, whether Sidious actually had the power to save Padmé. It turned out that he didn't. After Anakin betrayed Master Windu, Palpatine said, "To cheat death, is a power only [Plagueis] achieved.
What Padmé knew about Anakin's previous dark deeds. Padmé was well aware that Anakin had committed dark crimes that would've started his fall to the dark side. He even confessed to her that he had massacred an entire Tusken Raider village to avenge his mother, leaving no one alive.
Did Padme ever cheat on Anakin? No. As explained above, Padme did not cheat on Anakin with either Obi-Wan Kenobi or Rush Clovis.
He regretted it the moment he did it. He asked himself what he just did, dropped his lightsaber, and was visibly ashamed of himself when Palpatine anointed him a Sith Lord and began his speech about wiping out the Jedi.
Over the years since the Youngling massacre, and even sometime before, Darth Vader has regretted killing the Younglings, recognizing that it was the most terrible thing he had ever done.
At some point after his transformation into the armored Darth Vader, Amidala's husband, the fallen Jedi Knight Anakin Skywalker came to visit the mausoleum, stricken by grief and remorse for his part in her death.
The Little Girl
Long story short, she is Padmé's niece, Pooja Naberrie, and was portrayed by Hayley Mooy. If nothing else, you just learned a fun piece of Star Wars trivia.
Jedi Masters Obi-Wan Kenobi and Yoda watched Amidala's funeral from Senator Bail Organa's starship, the Sundered Heart. They didn't want to take the risk to come any closer and be found by the Empire, as they were certain that Emperor Palpatine's attention would be fixed on the funeral.
Yes, he remembers everything about his past (just not based on reality), but he probably doesn't spend a lot of time thinking about it, and when he does, his memory of things is clouded and twisted by the lies of the sith, the dark side, and his own flawed thinking and character.
He has! Darth Vader's love and his grief was stronger than the pull of the Dark side. He visited Padme Amidala's mausoleum on her home planet of Naboo.
Luke, Han, and Leia
She had encountered the Dark Lord of the Sith a handful of times during her political career, but her abiding memory of Vader was as her torturer on the Death Star. It wasn't until Bloodline that she began to truly understand Anakin Skywalker, in a situation where she too felt tempted.