molly fry???

[miiah is da bomb]

i have a molly that will give birth (black) sometime soon. she is in about a 25 gallon tank that is divided to about 10 gallons. thats what part i put her in. the male that breed with her has now breed with another female (silver). the babies from the silver molly shouldn't be born for at lest 4-6 months (at least thats what ive heard) how long is it until they give birth??? i was wondering if the fry from the black molly would be large enough for the other female not to eat them but small enough not to eat the new fry. i was planning on using the same space for the new fry seeing as the old fry will soon be moving out. i have also heard that the fry are usually big enough to put in with the adults when they are about 6-8 wks. is this true??? i am planning on feeding the fry crushed food, greens, as well as brine shrimp (the frozen kind) here are pictures of my two females. i was unable to get one of the male because he wouldn't stop moving around.
thanks