I’m sure they can take care of their own healthy take a chill pill and settle down. It’s safe to assume she doesn’t eat like that everyday it’s called a treat. Life is short it’s really ok to enjoy something sweet now and then I promise you. You’ll be ok.
Don’t eat it then if it has too much sugar although I highly doubt eating a plate of French toast like that say once a month or two will give you diabetes.....
Obviously they aren’t concerned so neither should you, you don’t have to eat it. A treat once in a blue moon doesn’t hurt anyone it’s ok to enjoy life relax.