you are stepping on thin ice here, and I can see two reasons. Her blaming her family for her lack of success is really a lame excuse. I understand that it is more difficult to eat healthy when everybody around you does not but she will eventually have to come to terms with proper eating in the face of such stiff opposition. She needs to learn to eat well in spite of stiff opposition, and meal replacements will not do that.
Which bring me to the second point. Making specific recommendations for food is beyond the scope of most personal trainers unless they have the appropriate training, and I saw nothing in your profile that suggests that you do. A referral to an RD who, ideally, should also be a health coach would be a great idea.
I wish you and your client well.