Sandy's tumor was non-cancerous!!!  Yay!  I am sooooo relieved!
She had her stitches taken out this morning and she looks great!  She has to wear the Elizabethan Collar for a couple more days but after than she will be good as new!

We did find out that she has hypothyroidism (low thyroid), just like me.  That explains the weight gain at least.  She starts her meds in the morning and she gets re-checked in a month.