Question

So my 5 year old choked on a mozzarella stick at a while we were out to eat a couple weeks back and my SO bought some at the grocery store a couple days ago and I'm at work now but my 9 yo wants to eat them and I'm having a slight anxiety attack over it since I'm not there to monitor and make sure my 5 yo doesn't have them. My SO said its fine she will be OK and I'm still not liking it am I over reacting or should I just relax. Let me also say I suffer from slight ocd and anxiety disorder but only when it come to my kids I've been like this since my 1st daughter was born with a congenital heart disease. Sorry its so long :/