Aggressive Pregnant Platy

[Platy lover]

I have an aggressive pregnant yellow mickey mouse platy who is picking on all my other platy's including a VERY pregnant Redtailed Black Variatus. Is this normal or should I be worried? She bit a chuck of skin off my male Marigold Variatus and I am worried for their safety. If I could I would put her in a different tank if I had one but my crowntail is in the only other filtered one I have