Keep showing her Freelee and Harley videos! :) Keep being the example for her! :)
You just keep doing your thing and let your mom do hers.. then compare results periodically.. eventually she'll realize what YOU do is the better way because it's healthy and sustainable on the long run.
All you can do is take care of yourself and share your love with everyone. Offer her a piece of fruit every once in awhile :) She's on her own journey as well and you can't force her in your direction.
You mean, any suggestions on how to help your mum? Or just how to get her to leave you in peace ;)?