Hi, Terry I am Dr. Peter and would like to help. Need additional information.
1- Is this swelling in the neck on the side of her wind pipe?
2- Other then the swelling any other symptom?
3- Can you check her right ear and see if she has an infection?
It sounds like you are looking at an enlarged salivary gland. It is not cancer but usally secondary to having the duct clogged up. There is a lymph node nearby that could be enlarged secondary to an infection as well. But, if it is underneath the cheek it seems to be the salivary gland. I know you have financial problems but other then applying warm compresses several time a day there is nothing else you can do. She needs to be seen by a veterinarian; you may try a shelter as they may offer vet service at lower cost. But the duct needs to be basically opened up.
If you have additional questions I will be online for another 10 mins.