It sounds very much like Munchausen by proxy
.Typically, it's a learned trait. She got lots of attention when her daughter was born and premature, but then she started getting better and the attention started waning. Chances are that's when her actions began because she got so used to all the attention, then to have it gone made her feel like she wasn't important anymore.
However, given the interview
from 2007 in which she states she was on anti-depressants, it's possible she will try to claim she stopped taking them and that's why she did these things. Temporary insanity or some such bullshit.