How can i get my parents to let me go to my friends house party?

my friends having a house party this weekend for her birthday, her aunt has like a really big house so she's letting her have it there but its like in the countryside so no one will be able to get there, so my friends getting everyone to go to her house then her mum will chauffeur people there and organise taxis but knowing my mum as soon as i tell her this she'll freak out. She can be quite strict and its not as if i will be drinking or anything:L my dad will be fine with it, so how can i get my mum to trust me at let me go?