I'm flying to AMS from BOS on an A330 next week and need a seating strategy.

Here's the deal...I used miles to "purchase" my companions ticket and $$ to purchase mine. I'm elite so I chose an exit row seat but because we're on separate reservations, I couldn't place her in the seat next to me.

Will I be able to place her in the seat next to mine at check-in (if it's not already taken)?