LoL. I understand what you mean Tink. I absolutely adore my little sister and LOVE spending time with her, but I just feel exhausted when it's over. She spent the night with us not last night but the night before that and I kept her all day by myself yesterday while hubby was at work. I guess she's just at that age where she needs to be doing something with someone else to keep her occupied ALL the time. lol.
I wouldn't trade my time with her for anything in the world though...
Anyway, I definitely hope you get that nap you mentioned. It sounds like you deserve it!