Thats great that she came out of her colic.
I had a young horse that was alergic to corn, she got colic 3 times before we figgured out what was going on. After the 1st time we figgured out the best way to cure colic is to get the horse moving & keep them walking until they poop. With our Arabian that was 6 hours of steady walking (I was exhausted LONG before she felt better)
I am happy your old Gal gets more time with you!