Did I read correctly in the original post that it took your Molly 3 months and several days before you finally saw fry?
Im having confusion with my pregnant Mollys as well.
Created a thread here:
The basics are that I have 2 Mollys that have been pregnant for at least 5 weeks. Yesterday I found 1 fry in the tank, but both Mollys still look very pregnant and neither have showed the typical signs of being close to giving birth (ie loss of appetite or hiding in a corner/near the heater).
Sorry to butt in on this thread... it just seemed similar to my situation.