I will speak to my friend. She can decide if she wants to pay the 15 EUR for a miles transfer, or if not, I will add her and her mother as friends. Leaving them as Together friends for a year will not be a problem.

I don't see this as abuse of the programme. This is a friend who would otherwise not be able to use the miles to their full potential. As I see it, this is what the feature was created for. There is nothing fraudulent about this.