I've raised £3500 to please help me get my amazing gf to Vegas to see the backstreet boys she's made me and my son so happy she deserves a dream come true please

My partner of 12 years April has been in love with the backstreet boys since the day they started but has never been able to see them.she honestly talks about them every day. She works so hard raising my son and holding down a fulltime job that she never treats herself. She turns 30 this year and I would love to surprise her with a once in a lifetime trip that she will never forget. I know there's so many other important things you could give your money to but this will make her life and keep a smile on her face for years to come.i have tried to save money to do this myself but being working class warning min wage in England and raise a disabled child I just don't make enough please help me be the best boyfriend ever :)