Barbara, you are exceptional . . . and I mean that in a most positive way.
For those starting out in training beyond the basics, I highly recommend taking NRA's Personal Protection in the Home and Personal Protection Outside the Home (PPIH is a pre-req for this). Surprisingly for the NRA, both courses are excellent . . . lots of good info to think about (a legal portion that gives you pause to think thru the aftermath and what you should say vs. not say, how you can expect the police to react, civil liability, etc.) and some good tactical drills. Drawing and shooting from a purse is a real "eye-opener" (they make all PPOH instructor candidates do this so we are better equipped to teach it).
I teach PPIH (and will be teaching PPOH as soon as NRA sends me my cert) and have had 25-30% women students . . . every one of them has done excellent in the class. The only students I've had problems with (sweeping others, finger on trigger, etc.) have been a couple of men who have been shooting a very long time.
[NOTE: One of the women had only shot 3 times before the PPIH class, twice as my guest (at my gun clubs) with her Husband (LEO). She was a naturally good shot and was exceptional in PPIH. So one need not have extensive experience prior to taking the courses, just a good attitude and safety conscious.]
I have taken defensive handgun courses with Jim Crews, Randy Cain and Gabe Suarez previously. PPIH/PPOH would be a good background before tackling those heavier courses, plus the legal ramifications are not something that these excellent name instructors teach (exception is Mas Ayoob) and necessary to keep out of trouble even if you do everything right.
I suggest folks go to http://www.nrainstructors.org/searchcourse.aspx
and check out where/when these courses are available in their area.