I have a friend she has a phobia of bathing whenever she has to take a bath her cousin helps her in that because while bathing she suffers from anxiety attacks which makes it not possible for her to take a bath alone ....now her cousin is not available for 1 day can she just make a wudhu instead of a ghusl till her cousin returns and helps her in taking a bath?
It depends on the level of her ritual impurity. If she has had sexual intercourse (with or without ejaculation), or if she is menstruating, or if she is suffering from postpartum bleeding (after childbirth) then she is in a state of major ritual impurity (janabat) and she is obligated to make ghusl. In the case of menstruation and postpartum bleeding the sister is obligated to make ghusl after they cease. May Allahu ta alaa ease her anxiety and help her perfect her Deen.