I’m not sure if she’ll try it but cheese soufflé is quite soft and isn’t too bad to make if you don’t fuss about getting the height. I made it in home ec when I was sixteen.

Basically it’s cheese sauce and yolks(?) folded into stiff beaten egg white and baked with the ramekins or bowl sitting in a pan of water. It ends up like a soft moist pudding.

Edit: That said you’ve already done more than your share of catering and effort also has to come from them