Thank you for your query at DoctorSpring.com
I understand your concern and I have reviewed your pictures.
Yes, it does look like the skin got pinched and it does look the bruise has come from that.
Why do you suspect abuse? Is there any previous instances to believe that it could be inflicted?
Patient replied :
Yes we do. She always has smaller bruises o your body, but I have attached the last set of large bruises that she could not explain.
This does not look like an injury, could be inflicted.
I would suggest you get it examined by a pediatrician with the parents along with the baby.
Feel free to discuss further,