The problem with School ball umps and to some extent youth travel umps, is that most of them ump Mens slow pitch, and have more of a baseball lean. That is why we need more girl umps, they understand the game and what to expect during the game. Guy umps have never played girls fast pitch...
Some of these observations might be unique to your area.
I belong to two different umpire groups, each with over 100 members, and there is very little overlap between the guys that do fastpitch, slow pitch and baseball. They tend to pick one or the other and stick with that.
Maybe that isn't a luxury you have in less-populated areas where you don't have many umpires.
It would be nice if there were more female umpires, but the sad fact is that they don't seem to have much interest in it. There certainly aren't enough to ensure one on every umpiring crew for every game. In the two large groups I deal with, I would estimate that between 5% - 10% are female (and that might even be a little on the high side). This has always surprised me, considering that fastpitch is played by thousands of females, many, many times more than by males.
The OHSAA even puts on special "accelerated" classes around the state aimed at getting more women umpires involved in the sport. But there doesn't seem to be any great increase in the number of females coming into the umpiring ranks.
(If any women are interested in becoming umpires, send me a message and I'll email all the info on when these classes take place. And guys are welcome too!)
By the way...I am one male umpire who played fastpitch about a dozen years. Admittedly, I'm only aware of a couple of other ones who ever played it.