I'm going to go against the general group and say ask for the dinner. DB-ing aside, this is a special moment for your D. Let it be about her.

If you are doing it to get together with your W, then forget it. But if you are there solely for the purpose of supporting your D and congratulating her for her efforts, then ask. Only you would know if you can be distant enough to act accordingly.

M-43 W-40
2D - 9 and 5

Emotion, yet peace.
Ignorance, yet knowledge.
Passion, yet serenity.
Chaos, yet harmony.
Death, yet a new life.

RECONCILED AND WISER