Yuparooski! I've read quite a few of her books!
I've read the Dakotah Treasures, Red River of the North, Return to Red River, the first book in Daughters of Blessing, the Sisters of the Confederacy series, The Healing Quilt, Saturday Morning, and Hawaiin Sunrise.
Emily, if you like horses, you might really like Lauraine's two teen seires The Golden Filly and High Hurdles. I really like them both and am currently reread High Hurdles.
What I like about Lauraine Snelling's books is that she isn't afraid to kill off her main characters.