ok, wondering if anyone who knows a bit about old sci fi books will help me figure out what book this is that I read a REALLY REALLY long time ago was ..... This girl sneaks into a party and ends up hiding in a coffin of sorts and accidently gets made over by nanobots and if I remember correctly the company does this for rich people, the making them over by nanobots charges large amounts of money and makes her try and work off the charges for her accidently doing it.