A litle bitty mongoose from Scott would be an excellent release and you can get it with different size straps.
My 12 year old daughter has taken over my Carter Fits Me Too.[

]This release cost about $150.00 but is well worth the money,especially for those of us that have small hands.
I know she has some reservations about a hand held but for most,they are easier to shoot with and usually allow for much tighter groups.