This is not like an abortion or a killing. One child had to die, or else they would both have died.
What I think might be difficult to live with is that the doctors had to make a choice, which of the twins to kill. It could have been the other way around. Best solution to that is to be grateful for the sister who gave her life for her, and to pray for her.
the intent is not abortion or murder. that makes a huge difference, if there was any other way, they’d do that first.