We could even say Lena contracted her to ward a few of her businesses/her home? Portland is full of supernatural beings, so precautions must be taken!
Lena's pretty laid back, has been around for only a hundred and fifty-ish years or so, and doesn't tilt at windmills. She's down for a party or a bit of mayhem, but she doesn't go overboard. No Bathory-like antics for her. She likes making money and living large, but she takes the long view and knows that tables turn pretty quickly, so best to have friends in both high and low places, among vamps and non-vamps.