Try soaking her in tepid water - barely warm. If she has a pink belly and dents in her eyes she probably needs to shed. Get her out of her tank and into a tub of lukewarm/tepid water, and leave her for a half hour or so (Watch her!) and don't put so much in that she has to swim.

Let her soak, she should shed soon, and hopefully be more receptive to water and not being dehydrated.