Room Sharing Laws in NJ

[Abigail K.]

I know I'm out on a limb here but I've scoured the internet to come up with nothing and on the off chance someone has experience with this I could avoid an attorney bill for the sake of my curiosity. 

A prospective tenant in New Jersey recently asked me if she is allowed to rent a one bedroom for her and her 8 year old child. I have found an article stating that occupants in a bedroom must have ample room (I.e. 70 sq ft for the first occupant and 50 sq ft for every additional) so theoretically if an apartment had a massive bedroom any number of people could live there. I'm always especially wary, however, when children are involved and I can't seem to find any NJ laws that dictate this.

Has anyone encountered this before?