I doubt she is mentally unwell due to that abortion, more so her upbringing, the way MW treated her and being on TV, and abortion doesn’t affect all women, if a baby isn’t what you want and your pregnant then you get an abortion, obviously not everyone is like that but there are many.
I mean she would’ve had a kid by now because she is desperate for everything else and she doesn’t strike me as wanting to be in a serious relationship before she has a baby, she was with Jake for 2-3 years and if she was infertile then we would all know by now!