Ate a marker?

I found a marker today that my 18 month old had, and the tip was broken off. She often tries to put the lids back on and may have broken it off that way. However, I haven’t found the tip yet. I am wondering if maybe she ate it? She doesn’t usually put things in her mouth, but she is teething right now. This was about 3 hours ago and she had been acting fine ever since. Should I be worried?

It was one of those Crayola markers that only color on special paper, so of course I didn’t see any color around her mouth or anything. Sigh.

Please note, I don’t leave her unattended. I hadn’t even left the room, but I did take my eyes off her for a second. 🤦‍♀️