Her bloodlines are okay, her sire's side is a little better than her dam's.. I do like the cow bred and running bred mix though, usually a really nice cross.
It doesn't matter if she's running 14s to 20s..It's the size of the pattern, not just the time of the run. I can go run a little pattern and run a 15-16 then go to a bigger pattern and run anywhere from a 16-18.. It just depends, it's not a one size fits all type deal..and if she's running the same pattern, 1D-3D times she's not consistent at all.
Those are some biiig pockets that girl is setting her up for..Over all she seems nice, That pattern isn't that big and she ran a 19something. She seems pretty automatic, that girl riding her needs to concentrate on riding her more than whipping her.. That big circle before running the pattern isn't needed either, a simple little slow loped circle is plenty before sending her...Those big pockets worry me a little, I understand setting up and giving plenty of room but that's a looot of pocket, the horse could possibly be a diver and she has to hold her off like that...Now I'm just rambling, giving my thoughts about her.
I would snatch her up, too! She just needs hours on the pattern to get more consistency. If she just started running the pattern, then she won't be very consistent right away. (All horses go through that rough patch.) If you get her and start running with her, chances are, next year both of you will be extremely consistent and be placing in the 1D, because she definitely IS capable of that.
The OP said that the mare has been on the pattern since spring of 2010..If she's still not consistent then something is being done wrong.