The one person i trusted is a liar one thing i thought i new was wrong?

my best friend in the whole wide world is taylor and she told me she slept over at a a strippes house the stipper went clubbin and she got drunk with the strippers cuzin who is 14 and DID him and taylor is 12 they didnt use protection she said she had a miss carage because an egg looking thing came out a week after first this is a complet lie because a babys does not look lie an egg after 1 week and this isnt the first time she lied to me she told me her friends was DIEING of cancer lie i know for a fact second she lied about why she was being called a tramp and i almost messed the guy up that was calling her that i was taylors fault but what do i do she is my cuzin and we are having a super bowl party and she is coming what do i do i dont want to mess the whole family up because i confront her and i, the only one she told about the miss carage what do i do