Supposedly both mom and daughter use it, she, and they interchangeably depending on what feels right at the time - which is, of course, not confusing at all for anyone that interacts with them (although it's not exactly common to use someone's pronouns when talking to them).

I personally enjoy the people in the comments saying that using "it" as a pronoun is dehumanizing. They're right, obviously, but it's funny to me that these are the same people that are always crying about not policing identities, and here they are saying, "I was sure you were a troll because you were using the it pronoun." Well, which is it? Can people identify however they want to or not?