Congrats to your D!
My younger son is shy and quiet so we practiced interviews with him. We asked the usual questions, the kind you can google up, like “what is your greatest weakness” or “what do you wish you had done differently in high school.” We tried to ask him some screwy questions as well, stuff he wouldn’t be ready for, like “boxers or briefs.” It helped him get comfortable thinking on his feet, and helped him work on what parts of his story he wanted to present.