That seems really bizarre. What would the psychotherapist even legally be allowed to say to the hotline? Wouldn't you be a more appropriate personal reference? Is there really no one else she can ask? I would call the hotline office and ask what they mean by personal reference. A personal reference really could be anyone, and I think it would be much better to use a boss, professor, teacher, or coach who can speak to your friend's individual characteristics rather than her psychotherapist.