usually not overnight - especially when you are coming from the extremes (cruelty, nastiness, bullying, QAnon, complete Trump worshipper/sycophant, etc.) A person with no compassion or empathy doesn't suddenly become a sweet and caring human being unless something life changing happens to them personally. She knows she cannot win a higher office (outside of her safe, bright red district) with her loud, awful, unlikable personality. So, she's gone soft and compassionate but notice how she always needs a camera in front to her play this new and improved Marge.
Notice how she took the time to play the victim during her speech supporting the REAL victims. She's been sooo persecuted for standing up for those real victims. She couldn't just shut up about her sacrifices to do the right thing and make the day about those Epstein victims. Liz Cheney she is not. Liz knew that she was likely sacrificing her career to do the right thing on Jan 6th. MTG knows that she is likely advancing her career by doing the right thing.
Big difference. And I for one, am sick of seeing her phony face on the news every 10 minutes when she is not doing anything that every Democrat has already been doing. End Rant.