She can actually mount Albinauric Archer Wolf wherever they are found, though it's unknown if this is an intended interaction.
Mostly immobile, only able to shuffle around very slightly. Make sure to place her carefully, preferably on a high, hard to reach spot.
Railings and big rocks are good positions, as are weapons with good mix of decent reach and good speed, such as Straight Swords and Spears, to keep hostile attention on the summoner.
Fires 3 arrows at once at a steady rate. While these don't deal that much damage individually, the steady fire gives her good damage if enemy attention can be kept away from her.
