Many people are uncomfortable using someone else's more expensive machine than their own. It might be kinder to just hand her a note saying something like: "Just because I love you friend - enjoy." That way she knows it's hers and she won't ever be uncomfortable with it. I know this because I recently had a very, very old friend of mine use my Janome 11000MC and she was super uncomfortable with it because she knew it wasn't a cheap machine. However, I wanted her to have the ability to learn to quilt and to sew again so got her the Janome DC1050 and she loves it cause it's hers.