[@The Harbinger of Ferocity] Okay, so here's what I figure. 

I've downsized Adrienne a lot. Currently she's about 20 feet from head to waist (ie. the "human" part of her), with another 35 in her tail. That brings her up to a total of 55 feet in length. By comparison, the current recordholder for the longest snake in the world is a reticulated python named Medusa, who's just over 25 feet in length from nose to tail.

As for her abilities, she's pretty average for her species. She's big, and most of her body is muscle, so she's very strong and can move pretty fast when she wants to. She's not venomous, so she kills things by constriction. I figure she's still big enough to swallow a whole person, but doing so will make her very slow and lethargic until she finishes digesting it, which would take her at least a day, if not a day and half. And she has four arms.