If you were behavimg like any normal person does in a bathroom - closing the stall door and locking it, staying in there long enough to do your thing, and then washing your hands and leaving - I wouldn't bat an eye at you being there.
I do think that the idea a bathroom (as a secluded place) is a dangerous one for females is well entrenched in our collective psyche. It's pretty much the parent of a girl child's worst nightmare that someone who is a pedophile/sex obsessed so-and-so will get their jollies off by being in the washroom or the locker room with their daughters, or will escalate from 'being there' to 'doing something'. But, a crossdresser is NOT automatically a pedophile or a sex-obsessed so-and-so; most people get this and move on.
If you want an example of what bathroom/locker room behaviour makes people uncomfortable, there are some threads from the TS forum about a pre-op transwoman who spent some naked time hanging out in a women's locker room/sauna being used by minors, and how that situation was responded to by our members:
http://www.crossdressers.com/forums/...colleen+brenna
http://www.crossdressers.com/forums/...es-locker-room
http://www.crossdressers.com/forums/...ut-still-legal
