Even if she did make an attempt at it; I don't think she has the stamina to make herself live a "mother of the year" lifestyle for 4-6 months. She might make it a few weeks; but when she has to give up her single friends and her single lifestyle it's going to cause some serious problems within herself.
I could be wrong; but based on her history and how she's been living, it would be tough.
Having said that, the very thought of that type of manipulation has certainly entered my mind before and that is why I asked the question to my L. I feeling, more and more, that I need to file first and soon.