She simply is not pregnant, never was, but her body has tricked her mind into thinking there is a baby. The only way to convince her daughters is if you have some type of time-line to show them. If there was a card sent, or something with a date stamp on it, you can prove how long she has been talking about being pregnant, and even if she was not 3 months along, but only 1 at the time she thought she was pregnant, that's still 10 months, and highly unlikely that there is a baby. My guess is that either she has a tumor (not saying cancer, just a tumor which could be fatty tissue or other substances ...) or she just gained weight to support her "pregnancy". She definitely needs help, but if she is unwilling to get it, then so be it. It's her body, and if she wants to continue to talk about a baby, sooner or later everyone around her is going to have the same answer for her ... there is no baby! I also have to ask, and maybe you already said, Colleen, but is she married or does she have a man around that lives with her? I never hear you talk about a man, and find that kind of funny, too. Of course, maybe her vegan diet is what got her pregnant! You just never know ..... ;-) It's very sad, and I feel bad for you, too. Kind of like having a miscarriage, and having to bear the grief that comes with losing a baby, but yet she has never given in to the fact that there never was a baby. Prayers with you and your family ....