Shirley has vomited a small amount of what looks like undigested supper twice this week. It happened both times between 3-5am (yeah I hardly sleep). She's not lethargic nor showing any signs of not feeling well, no temp, eyes clear, no runny nose etc. I feed her bfast at 6:30am and supper at 6:30pm. She's eating and drinking normally. She gets nothing but her kibble and grandma Lucy's baked treats during training sessions and only 4 cookie treats given per day. Her bowls are washed every other day or every day depending on how much she slobbers. Her bowls are stainless steel. I'm very scared about hyperthyroidism as I lost my cat to that November 28, 2020 after over 16 years by my side and I am still heartbroken over it. His vomit was foamy and clear liquid and rarely had any food substance to it. There has been no changes in Shirley's diet or routine. Is this something I need to get her to the vet over or something I just need to watch and is there something I can do for her to remedy the vomiting at home?