Sounds like you're in a difficult predicament If it were me though, I'd be wondering why she's only sighing and rolling her eyes when I talk? If she was just completely self obsessed, she'd do it whenever anyone else talked, not just single you out. If she is just singling you out, then why? Does she think you'll put up with that behaviour and not say anything, while the others would confront her, so she won't pick on them? Or does she sense you don't like her? Maybe you unconsciously sigh and roll your eyes when she talks cos you're fed up with her going on about the same thing?

I would ask one of the friends you feel closest to what they think of the situation. They may have valuable insight into your non verbal communication that may be leading to this, or they may completely agree with you that her behaviour is unprovoked and might agree to stand up for you the next time this happens if you do not feel able to stand up for yourself (I think it was you who'd been unable to stand up for yourself when friends parked all over your lawn, ruining it?)? Otherwise, like ultramar says, confront her about it. You deserve respect when you talk, like anyone else.

All the best,

*Willow*