2 month old Black Molly w/ new born baby black mollies?

my black molly is pregnant and is going to give birth sometime very soon and i have 1 2 month old baby molly thats only 1 1/2 cm. will they be ok together? she is still really tiny her name is trooper because she is the only baby to survive 5 got eaten and 1 died for no reason! (i didnt know the mom ate her babies) the mom i think will have at least 10 babies or more. will they be ok together? i dont want any babies to die this time and i want them to feel safe and know that nothing can harm them please help!