Probably stupid.. but needing advice!

This is not a big deal in the grand scheme of things, but I was wondering how you other mommas would handle this. My MIL was visiting the past couple of days and she gave my little man a spoon to chew on that she had already eaten with, a cup to chew on that she had drank out of, and has also tried to feed him with her spoon before. It bothers me but I have a weird relationship with her and can’t get myself to speak up 🙈 Would you all be upset about this and if so, would you tell her or get your husband/significant other to tell her? Thanks!