I'm sure she feels much better with the excess weight gone with mobility and overall energy. She may be 92 but that just adds to how much better life will be for her, especially in her twilight years. Honestly would you rather sit around in constant pain from your weight squashing your old joints and bones, struggling to move and do anything in your last years, or would you rather be able to walk around, keep up with your hobbies and have the energy to actually play with your grandkids over just sitting and watching them.