You're misunderstanding.
the moral support wasn't in forcing her to make a decision she didn't want to make. You're perfectly correct - that wouldn't be moral support. If she didn't want to make the swap and they were all pressuring her to make the swap I'd be completely agreeing with you that "it's HER CHOICE!!!" and they were forcing her to do something she didn't want to do.
But that wasn't the situation though
She... clearly... stated... that... she... wanted... to... do... the... swap.
I don't know how much more to break it down lol