I agree with Kev about protecting that corner with something like hardware cloth (or chicken wire) if she's sitting close to it.
And the small pen looks like plenty of space for her and a few kids for a while. I don't know how large those gaps are between the wires of the fencing on the small pen, but you might want to chicken wire the whole bottom of it for the little ones so nothing can reach through and grab and so they can't slip out... the gaps look like cattle fencing gaps (but I'm currently not wearing my glasses)