I'm sorry this has been such a struggle for you. I don't really have any particular suggestions I can offer. (Hopefully there will be other PC members who will.) However here are links to 4 articles, from Psych Central's archives, on the subject of trichotillomania:

An Unconventional Take on Trichotillomania

My Life with Trichotillomania (Hair Pulling)

What's the Best Treatment for Hair-Pulling Disorder?

Cause And Treatment Of Trichotillomania

Best wishes...