I think the assumption that abortion and abortion dialog is included in a list of what she'd warn for because it's an issue of being too political vs. being a possible trigger issue for some people

I don't know - the one time I wrote a fic that dealt with an unplanned pregnancy and a character deciding to get an abortion, I warned for the fact that the fic dealt with a pregnancy being terminated (I think I put it vaguely like that, too, so as not to completely give away the plot), because I was afraid reading the fic could, if not trigger, then at least seriously upset someone who'd either had an abortion themselves under traumatizing circumstances or who had just recently lost a baby (a friend of the family miscarried while I was in the process of writing the fic, and I remember thinking "Okay, this is not somethng I'd hand [name] to read right now without telling her what happens in it. I don't think I'd give her happy fluffy babyfic without warning her that there's pregnancy and babies in it, either").