What a lovely lily treasure! Your mother had a good eye and skills.
I don't come from a family tradition of quilting myself and I have zero hand quilting skills, but I admire those that do. So many wonderful people here who can help you.
We also have some wonderful machine quilters here, I wouldn't dismiss that as an option either. Unfortunately for me, quilting by machine is also not a strong suit of mine! Much better than my hand skills though. My main problem is the thinking of a design more than the doing at this point, I just don't usually think in that direction.
Good luck and welcome, glad you found this board.