Hi,

It is natural for a child to cry but not like this. Did you try asking the parent if the child is ill, in pain. There is some kind of illnesses that will make a child cry day or night because time doesn't make any different for them like Autism. It is the only way for this child to communicate because she/he is in his own world. Otherwise there must be something wrong. The child might be abused off.

I cannot tell you what to do. But this doesn't seem right.

Hugs!
nightdream