Re: Should I stay?
Your post is very vague (as you warned it would be) on the nature of the problem; I can't tell if the core problem is a difference of teaching or aikido style with which you disagree, or if you're talking about sexual harassment or discrimination issues.
If the problem is harassment, or discrimination -- the sort of things which the women I know would describe as "setting off the alarm bell" in their head -- then you leave immediately. You then discuss the situation and events with another woman whom you trust, and decide wether or not there's anything factual to report to the proper authorities.
If the central problem is stylistic (teaching style, aikido style, etc) then, based on your level of experience, I would encourage you to continue training to see if your perception changes.