As promised, here's the finished version.

Luckily, Willy's parents aren't home, so Jenny can relax and stay in her true form-no need to put a strain on her abilities for the concealing spell. Willy was kind enough to let her sleep in his bed, but he didn't realize she borrowed one of his shirts (she noted earlier that Earth's cotton shirts feel very comfortable :P), not that he would mind. Now, the only problem would be explaining to his mom what's with the pink and white hairs on his bed and in his clothes...