Info on "Leave It To Me"

I know it’s a long shot, but I’m looking for background info on a H/J mare purchased in 2010 in Central Texas. Show name “Leave It To Me,” barn name “Liz” or “Izzy.” Solid chestnut, thin white stripe, 15.2( give or take), chunky build. Super mellow, gelding-like personality. Sold as 10 y.o. TB/warmblood cross, could be as old as 15, may have been A circuit children’s hunter in or around Oklahoma. Thanks!