HELP! use of bodily fluids... mental illness or not?

is there a/any mental illness commonly associated w/the use of bodily fluids? i have a family member who doesn't wash the dishes well, fixes food in half cleaned pots and plates, smears bile on toilet seats and knobs, after the restroom goes and cooks w/out ever washing her hands, spits in other ppl's food or drink, smears nasal mucus on furniture, digs in her nose then touches readily edible foods like bread, cheese, cereal, milk... i've even seen her wipe her hand in her private area and not long after, she reached to give me a book and i could smell her vaginal secretions on her hand. these are things that happen every day. not all at once though. but everyday she does a couple of these disgusting things. i watch her now and always catch her doing something gross. i've told her its gross and she says sorry sometimes but denies it mostly. so she knows she's wrong but doesn't stop. she even messes the house up on purpose rite after its been cleaned... wtf! something has to be wrong w/her. rite? help!