OCD, definitely, but other issues. Could be she knows she's acting oddly and is highly stressed and shouting for attention and help. Could be something in her past that she hasn't come to terms with.
Whatever it is, the OCD can become serious. I knew someone who became obsessed with hygiene until the only thing she would offer her husband and children was boiled eggs. This triggered medical action and it took some time and a stay in hospital, but she recovered and even began giving talks about it to help others.
I think counselling would be a very good start.