You should always offer a lay box for bigger girls, just in case. Since they sometimes lay duds and it's good to offer a nice place for them to lay.

You can't really tell from the pictures.. But if she's ready to lay in a couple of weeks you should feel some bumps on either side of her belly if you press gently and let her crawl through your fingers.

Some girls are just fat! I have a fatty too! I'd probably stay away from the meal worms, though.

I basically just echo'd what Brittany said!