You can also sneak into the pagan monastery to steal the ears, and the rest can be gotten from defeating the wolves, no beastiality needed.
Talk to both monasteries, do not accept the pagan invite out back (it has a note on the button about unlocking beastiality content). At the other, click the Sister Raven info, if I remember right, to get that as a Vessel, you aren't allowed to participate at the pagan monestary. You should then be able to sneak in and steal the cat ears