We also had the TTF and applied those funds toward tuition, while the Terry funds covered the delta + all of the additional expenses. They just reduced the amount of the scholarship by the amount in our TTF plan. I can't remember if this was required or not, but I'm thinking she should say something similar. Also, she needs to emphasize that she will give back to the Foundation in the future either with her time or money. This is a self-sustaining org at this point, so this is the one interview question where there are definitely right and wrong answers.
The panel will likely be a pretty random mix of former scholars, so it's difficult to say, but I don't think it should present a problem. It wouldn't for me. As long as she's clearly bright, driven, and personable, I think she will be fine. When I went through it I received a last-minute call to interview because someone else dropped out/chose Harvard or something, so I had to come straight from soccer practice to the interview. If they were able to overlook that, she should be fine . I would still have her dress nicely for the interview, but I don't think there is a need to "neuter" her personality.