What size rat

[anicatgirl]

That girl can go up a size. Live rodents "shrink" a bit when they aren't physiologically active anymore. Best to get the largest meals possible into her while you can, just in case she goes off feed for a bit sometime.

I have to disagree with this. Feeding them consistently is one of the best ways to keep them from going off of feed.

To OP: Your girl looks perfectly fine to me. Not in the least bit skinny. You got nothin to worry about. No need to feed her more than once a week, for sure.