USSA is one of the best facilities in the country and is full of great instructors, competitors and Top Shot contestants. Mike Seeklander, Steve Aryan, and Chris Collins are awesome shooters and great guys.
I shoot competitively with 4-5 of the TDSA instructors and know the owner of TDSA, Marshal Luton as well. These guys have probably the best curiculum of any training out there. Their instructors are competitive shooters, cops, and great guys. If she decides to take a class there let me know we can probably find a discount code for her on my forum. BoomerShooter.com
If she is a single mother with two kids i would assume that she has very little free time and not a bunch of extra $. So a two day 1000 round pistol class out of town may not be what she is after. i think she needs to take Will Andrews courses at H&H gun range right in OKC. I have taken pistol skills 1-3 and they are all great plus u can go back and retake them for free anytime if the classes aren't full.
Here is the link. http://pistolskills.com/?page_id=2
If she is in the North Side of OKC or Edmond Heartland Outdoors offers some classes from a guy named Spencer Keepers. This guy is solid! He has trained with about every name in the personal defense/tactical market and is now using those learned skills to build his own curiculum. Here is a link...
There is also a great place near Shawnee called Practical Shooting LLC. I know the owner Wes personally and he is a very talented policeman and firearms instructor.
Feel free to PM if u need more info.