Ava starts the Animal Magnetism Quest. She is the assistant to Professor Oddenstein. She also creates Ava's attractor and Ava's accumulator for the player at the end of said quest. If a player loses the device, it may be claimed back from her for a fee of 999 coins. She can also upgrade the Attractor to Accumulator for 75 steel arrows, but that can only be done if the player's Ranged level is above 50.
She resides in the "secret" room on the ground floor at the southwest part of Draynor Manor, just behind the hidden door next to the bookcase. To get to her search the candle sconce on the west wall of the study, revealing a "secret door" which takes the player into the bedroom. Ava will not appear until you have completed the Ernest the Chicken Quest. To exit the bedroom players must pull the switch, opening the door and allowing the player to leave.
Ava also has a small shop, Ava's Odds and Ends, that sells various Feathers, Arrows, and Arrowtips. However, you must have completed the Animal Magnetism quest before you can access this shop. This is handy if a player needs to quickly buy the 75 steel arrows needed to upgrade their device.