anyway the clan is probably still around just either in secret or the gene have fallen into a dormant state from reproduction with non clan members. also it is completely plausible that she has senju abilities because for 1. we havent seen her fight much and 2. she has to have something other than medical ninjutsu and super strength to be a sanin cause if that were so even though she is good it would leave her doomed in a lot of situation so she probably has senju to lean back on. plus it is completely possible that she didnt use it against oro because kishi had not thought out this far and senju was not even thought of at that point.