Claiming Grandmother on Taxes but she is in nursing home???

Ok. I've been helping to take care of my grandmother for the past 5 years but she has been placed in a nursing home on a permanent basis. Up until then we shared the expenses etc.. We both own the house together jointly with survivorship etc.... I do not pay for her to stay in the nursing home the state does, but I buy her clothes etc... Since I am upkeeping half of her "titled"home does this qualify for claiming her as a dependent? I couldnt find anything in IRS code that discussed this topic specifically. Thank you.