The best thing that I can suggest that you get together and help finish the blocks. She should see how important the seam allowance is. I have one other thought I was asked to put together some blocks that definitely were not the same sized. I was watching Simply Quilts that morning. Alex said we can all face that problem when different quilters combine blocks. She showed what she had done to solve this. She took small and I am saying about1 inch strips of something bright and carefully sewed it to the smaller ones. When she showed the finished top it was so pretty and just added to the design. I hope you get a lot of good ideas to help you.