I wonder why you should have a preference for a female instructor?
Back in my instructing days, I had a few women as pupils. Two or three were ineducable (as were several men I tried to teach), most of them were below average and failed along the way. Women on the ground tend to have their heads in the clouds - when they are in the clouds their minds tend to be earthbound! But I had a couple who were absolutely superlative. One, ironically, was killed in a car crash through no fault of her own. The other went on to get an ATPL.
In my experience, a good woman pilot is head and shoulders above all but the very best of her male counterparts. Don't often meet them but they are unmistakable when you do; usually quiet and unassuming but always thoroughly professional in what they do. Patty Wagstaff comes to mind.
If you find such an instructor, you will be a lucky man indeed for not only will you find the skill but perhaps a level of patience not always characteristic of the male FI.
Good luck.
GQ.