Coverdell ESA - Grad Student

My daughter is attending grad school.  She is provided a full scholarship and also receives funds for living expenses (she works in a lab) which she reports as income. 

 

I have some funds left over from a Coverdell ESA.  Can we use that for "room and board" while she is in grad school and have it be a qualified expense (non-taxable)?  It seems that the definition of qualified education expenses are different for grad students than for undergrad but I may be confused.