Quilt Tying Question
My niece has just finished her first ever quilt. It is a basic 4 patch/solid block baby sized quilt. She is not quite ready for machine quilting yet so she is going to finish off by birthing the quilt and tying it at different spots with yarn. The quilt is 3 layers of flannel. My question is, what is the best needle for her to use to be able to go through the 3 layers of flannel with the yarn to tie it on the top. Thank you!!