I would for sure call it in. My #1 concern here would be for the children. I live in Ontario and here especially, we have had some very bad caregivers being caught with too many children. Children have been hurt and have died. I would feel a responsibility to those children (even if they are not in my care). If Mom and Dad are not looking into it and she has too many and doesn't care, someone needs to speak for these children. I know from doing this job, that there is no way to give quality care to that many children. Good luck and please keep us posted.