I didn't see the approximate size at first, but I would have assumed she'd be on weaners by >300g?!
That being said, when I was collecting frozen rats the other day, I mentioned I may try my growing male on a size up soon, from large weaner to small rat, and the shop owner was telling me about a mate of his who only feeds his males large weaners and said they were massive... so whatever works for you and yours I suppose!!