I just find that statement really sad, she had to fill the empty seats on her side with his friends.
She hardly needed help filling up on her side. She had friends that were pushed into the nave. I couldn't believe it when I saw that Rick Hoffman was in the Nave. They are very close. She likely considered that some of these friends have known Harry for a long time or have acted as mentor to him. to Harry and give up a few seats on her side as the BRF filled the other side. Seats are hard to come by in the quire when it's less than 80 before the choir given the size of the BRF.