Why fritter it away on things she won't even remember?
As someone said further up the thread, life is not just about remembering things, but about enjoying and living in the moment.
Yes, your DD may need a house deposit, maybe money for a car, uni etc, but that doesn't mean every single penny has to be saved.
This has been brought home to us sharply in the last month. My niece, beneficiary in a relatives will a couple of years ago, as were my DC, died suddenly and unexpectedly in early 20s. Unlike ourselves, who have experience of investments so are guiding our kids in how to save/ invest their money, my niece didn't have that. Her parents aren't v money savvy and we aren't particulary close to them due to my DB's actions in years gone by.
DB is now sorting her affairs and it seems she frittered quite a bit of the money, not surprisingly. Too much too young and with no advise.
Whilst she would, I am sure, have regretted it had she lived and wanted a house, my thought at the moment is that she did get some joy from it whilst alive, going on holidays she wouldn't have otherwise afforded and treating the many friends she had.
While tragedies such as ours are rare, it has highlighted how short life can be, therefore must be lived, its not just about planning for the future, as important as that is.