also a tip use a security pin to unlock your phone and a security pin when powering up your phone. then u have nothing to worry about and she would not find out about the "other" women.
I left my phone at the girl I babysit for's house, and I need it to die before the morning....shes not home till then, so I've just been calling it non stop...(fully charged before I left) if I KEEP doing it will the battery die?