I have to go away for her 9th birthday. It's non negotiable. I can't be there. I will be home the day after.
Her 'big' present was supposed to a weekend away. We are still doing that, it was the weekend after her birthday.
I've also arranged for her to have a tea party at her Grans on her birthday. She was not meant to have a party owing to the cost of the trip away being far more than we would ordinarily spend on her birthday present.
We have told her she can chose a small gift. She asked for a Kindle Fire 
She is getting a lot spent on her Christmas present too (A 3DS XL)
WIBU to buy the Kindle Fire anyway, even though she was not supposed to get a 'big' birthday present because I feel awful about leaving her. She is not expecting it, she knows she can't have one, so it would be a nice surprise for her on her birthday. She does love reading and has wanted a Kindle for years. Ever since they came out.