Originally Posted by FindAWay

I
Since your companion's BP is a good number, let me revise to....
You might want to try cancelling your BP last minute to try and re - check - in and they would get the earliest available non-BS position, which may be quite early if someone else ahead of you changes or cancels their reservation.

...it can definitely work - I have seen C group BPs become A group.

I am glad you were able to keep her EBCI. Practically speaking, just have her save you a seat if all else fails - this is certainly a situation where I wouldn't feel bad about seat saving.