I didn't remember that she'd been given Dean, Draco, or Seamus as choices, so I think she'll likely be sent after either Dean or Seamus if ellemir is right that she's going to be told to "completely" eliminate someone from the competition, too. When I thought it was just Dean and Draco I was more certain that it would be definitely just Dean.

It's also possible that Lana will tell her to "completely" eliminate Ron as revenge, but that'd necessitate Avery having told Lana that it was Ron's doing.