Girls are crazy creepy bitches who can't accept your privacy whatsoever. This isn't really that unusual. Those who are saying otherwise are backseat driving from a car that has never had a girl in it.

Ka-blam.

Don't let shit like this bother you too much and do the minimum to keep her from getting irrationally worked out. Let her snopp if she feels she has to but let her know you think its retarded. It'll be fine.