Congrats Nick. Most rats, at least in my experience, are excellent moms. It's pretty rare to find one that won't or can't care for her offspring. Don't be surprised with the bigger litters if the female splits her litter into two nesting areas. When I first bred rats I used to "help" by putting them all back together for her. I'm pretty sure back then the female rats were not impressed with my idiotic helping LOL.