I have had missing baggage from air travel, and i totally understand how it can spoil your trip..
Unfortunately though, all you are entitled to is the refund of any necessity items you had to purchase whilst away from home. Toiletries such as toothpaste, tooth brush, deo, etc you can claim if you loose your bag for more than 24 hours,after that, you can claim for neccesary clothes too.
I claimed a total of �380 and my bag was lost for the whole of my trip. I would guess as long as you didnt buy designer everything, for 3+ of you, �700 will be paid. If you ended up buying a (reasonably priced!) extra birthday present for your daughterwhile you were away as her ones were delayed, you could try and play sympathy vote and claim it. You will need to write this separately and you will need to have receipts for EVERYTHING you claim you bought.
Hope this helps.