Rodeohounddog I pray for your little mare. I too have experienced recently what you are describing though my little guy never went that long with out a bowel movement. If you are getting mineral oil into her it should pass through the GI tract within 12-18 hours if there is no impaction. Any sign yet? Also to get her to drink more mix 2 parts salt with 4 parts Baking soda and 1 part lite salt and take a tablespoon of that and mix it with water and syringe into her mouth. This is per my vet. Do this mixture 4 times a day and it helps replenish electrolytes on top of being salty enough that it causes them to want to drink. She also said to keep a bucket of fresh water and a bucket with electolytes in it and let him choose which he wanted to drink. My guy chose the electrolyte solution. My guys symptoms were just like you mare. He was lethargic he wanted to lay all the time. He did roll up on his back when he laid unless I sat with him and then he would lay quiet. He wanted no food or water and had at times no gut sounds. Other times the gut sounds were loud. He would nibble grass but with very little enthusiasm. He colicked off and on for several weeks. During these episodes he kept geting tubed with mineral oil and electrolytes and given banamine which would only work for a few hours then he too would act colicky again. I ended up treating him homeopathically with more success and comfort for him . After a a few months of these colicky episodes my guy became sick and had a bout of severe diarrhea. I had a barrage of tests run on him and all came back normal. After asking questions here if ulcers could be causing it. My vet and I decided to treat him for Ulcers. Since he started the Gastroguard he is a new horse. He is a voracious eater now, his coat is healthy, and he is spunky. I hope that this is your mares problem and not something much worse. Please do try to find an veterinarian that can rule something more serious out. Is it at all possible that you are missing that she pooped? One more thing check her temp, pulse and respiration. http://www.lilbeginnings.com/links/info/health/signs/
Good luck!
Good luck!