Feral is a pretty underwhelming ally overall but has a little value in a Digging Deep + White Fox deck or Domino. We'd expect a cost of 3 for a 2 THW, 2 ATK, 3 HP ally, so is the Response ability worth the extra cost of 4? On efficiency, it checks out since she'll do 2 extra damage at worst for 1 more resource, but that extra damage can only go the villain, which is a big downside. I won't be throwing Feral into a deck for value alone, but as a combo piece she is acceptable.