Don't have a direct answer to your question, but I definitely share your concern. My mother is SEVERELY bi-polar, and both my sister and I are mildly OCD... so you do have that 'chance' in there, genetically. With my mother, she needs medication AND behavioral modification therapy... meaning, she needs to practice different WAYS to respond to stimuli... the correct, socially acceptable way, as opposed to the harsh, rude way she often does when she's 'on the upswing', making people want to just stay away from her. Mom has only recently begun this therapy, but I've looked into it A LOT and it took many years to convince her that in fact she's not perfect and the whole world's wrong, she indeed has a severe problem and needs help! So far she's just helped the 'tip of the iceberg', but it's been almost 70 years in the making, Rome wasn't built in a day as they say. I think counseling is ALWAYS a good thing, for ANYONE, and that would be the place where a disorder such as that is seen/noticed and can be dealt with before she's... well, 60something years old with a family that can't stand her!? Again my mom's at the stage where she needs medication AND the behavioral therapy... but your daughter may not need medication, the therapy could be enough (I hope).
Good luck! :)
K.