Originally Posted by themacpack
The whole "keep them walking/moving" approach to colic has actually become considered as outdated - allowing a horse to rest quietly (not rolling) is becoming more accepted.
Outdated? What is this, fashion week?
If it works, it works. In experience we had a horse acting just as the OPs, the icing on the cake was when she tried to sit down with a kid on her. We got her up and walked her and within 4 hours she was pooping fine and much better.
So from experience, that is my advice to the OP. Outdated or not, it worked for the mare better than letting her sit down. Plus it gives the owner something to do, rather than sit around and worry they can actively do something to help ease their horse :)