I would send, or better yet, bring her flowers with a hand made card. If you are fortunate enough to maintain a relationship with her, visit her and bring samples of some of the projects you have made with her machine. You may then get an idea of what she likes and needs. If you can't visit her, then pictures of your projects and the story behind them or information as to the technique or choice of fabrics. If she enjoyed sewing as much as you do, she will enjoy hearing about the things you are making and that she can no longer make.