I'm having a birthday night out (for my 60th) in a couple of weeks and have asked one of the guests to make a cake to be shared at the meal.
She does this as a hobby and often brings along a cake to parties etc. She does really beautiful cakes.
There'll be 30 of us. Lemon sponge, I haven't specified any particular decoration but I know she'll spend a fair bit of time on it.
For context, I'm paying for a couple of rounds of cocktails for everyone plus putting £1k towards the restaurant bill so everyone will only have about a tenner to pay towards the night (I've also paid for transport).
I don't want to offend her by offering too little. She's not one of my closest friends so I can't just come out and ask her directly.
What do you reckon I should offer in the circs?