Momma Rat TOO small

[Nic]

This weekend I bought a second female for my breeding colony. Due to horrible selection, I bought a female with 3 babies. I am pretty sure she had a few more, but it was definately a small litter.

My concern is that mom is too yound to have had babies. She is about half the size of what I would consider breeding her at. She must have been in with the boys at the store. Anyway, Is it possible to keep her isolated, and have her pack on the pounds when she is done nursing her last 3 babies? My hope is that I can get her up to a healthy size before a let her mate again. I am not sure if now maybe she will have stunted growth or something.

Thanks,
Nic.