So I sat DD down to play with her crayola textas (she had foun one of my pens and was wanting to draw with that), and she's always been good with them. I popped into the kitchen and came back out, she had texta up her nose and mouth (which is normal) but I noticed the tip of the pen is missing! So I can only presume she ate it - should I be worried? Or just wait for it to pass through? (I wonder if it will change her poo's to blue!) They're the non-toxic one, so I'm hoping it will be okay