Do the adults that were there have any insight?
Something to cause such burn wounds would certainly cause the kid to cry loudly when it happened. Do they have any recollection of it happening? They don’t appear to be cigarette burns, but anyone who may be halfway looking after the kid should know what caused it.
My wife would kill me if I didn’t know what happened to cause something like this with one of our kids while I was watching them. Those appear to be some pretty serious burns, and there’s more than one.
I’ve called her three times tonight and gotten no response. That could be that she’s “out” or it could be her dodging the question. If it’s the later, when i do get a call back, she’ll play dumb and act like she didn’t see them.