My sis is suffering from OCD since 2016.

My sis is suffering from OCD since 2016 in starting this was not problematic but from last year it's becoming very dangerous for her. She says that she always feels like her hands are not clean she feels like her hands are touching her private parts also she spends almost 2-3 hours in the washroom as she doesn't believe in herself and she washes everything all body parts all washroom accessories again and again due to this fear she usually went to the toilet once a day so she is scared of even drinking water this may lead to serious illness. She is not even able to sleep properly as she checks her hands again and again. She can't change her clothes on her own, from the last some months this condition is becoming worse and worse she also hesitates while sharing everything so we need a female psychiatrist for her as she is not able to sleep,  eat, study by all this life is becoming miserable for her we need your help please help us that will b your most kindness