Our 30 year old horse, Penny, has gone down - possibly colic?

We put some video footage together.
There were a lot of bowel sounds, so we let her rest with her horsey friends for half hour and then went back and got her up and walked her for quite a while. At first she kept wanting to lay back down. We finally left her when she was standing resting.
We checked her again, she was lying down and ran off and looked like she was about to poop, hard to see in the dark.