Pet Health > I have a marmoset monkey. She is a little over 6 years ... > Vet Questions

I have a marmoset monkey. She is a little over 6 years old and I've had her since she was 4 months. She has had one cold in her first year but has never been sick since. We live in the midwest and since it's gotten cold this winter she has been sleeping a lot. In the last few days she has been almost sleeping all the time, she is not eating much at all and she seems almost cold to the touch. When I discovered how cold she seemed I put a heating pad on her cage hammock and she seemed to like it, but sometime during the night she moved back to one of her regular beds and was once again cold when I woke her at mid-day. I now have a space heater in front of her cage as well. I do have her cage covered on three sides and the top as well, even though she's never needed that before. Could she have hypothermia? She doesn't have any other obvious signs, like sniffles, runny nose, sneezing or coughing. Her eyes seem clear and fine. Please help as the only vet in my area that might see her is sick herself right now. My little girl doesn't seem to be in any obvious pain, but what else can I do until she can see the vet?

Optional Information:
Age: 6; Female; Breed: marmoset monkey

Already Tried:
heating pad and space heater - warm milk and offers of her favorite foods - as much water as i can get her to drink - quiet - a little bluegreen algae powder from a capsule with applesauce ( what she had to help her only cold ) flannel sheets on three sides and top of her cage to prevent drafts plus cage raised from floor.