I have a AY6 JFK-HEL flight coming up in April - with Mrs CKBA.

I'm BAEC Gold, with the ticket booked through AA and was automatically assigned a seat in Y+. Mrs CKBA, BAEC silver, was booked through BA, but couldn't get a Y+ seat (without payment). I changed my seat to sit next to Mrs CKBA, but it seems that she should have been able to get a Y+ seat for free. Correct?