Fucking hell, do you people forget that these are actual names and people reading these threads might actually be named them? What's wrong with saying 'I'm not at all a fan of that' or 'not to my taste' instead of throwing around spiteful and baseless class judgements?
Anyway OP it's alright - I wouldn't have picked it myself but there you go - my preferred spelling is Haley, but obviously I'm biased 
and couldn't possibly be from an educated or middle class family, so clearly kno nuffink bot speellins...
And if you name her Hayley/Hailey/Haley now, at least she won't spend the rest of her life going 'Yes Hayley. No not after the comet. Yes it does sound like that doesn't it hahaha' christ that was some tedious shit