Have you tried Petfinder?

Contacted the vets in town?

The only other thing I can think of is someone who has a secure warm shed where Creamsicle could live and get food and attention...or that a few volunteers get together and build a homey outdoor enclosure for Shaunna.

Chemo can be really exhausting, I understand, and I appreciate that she knows what might happen - she really is looking out for Creamsicle's best. At least she is not dumping him at the shelter.

Prayers that an answer turns up!