My orchid lost all its leaves...please help

[peaches]

Hey,
Im new to orchids and i fear i killed this one . My bf got it for me back in may and it was doing good untill i moved home for the summer (I dorm in college). The flowers started falling off and the roots were rotting. So like last week it was down to two green leaves left so I replanted it in orchid planting mix (because it was in moss). I thought maybe the moss was holding on to too much water, and i water it about every ten days. But today it lost its last leave and now its just a stub. I looked throught orchid species and I can tell you it was a Phalaenopsis Schilleriana and I will post pictures of the last leave that fell off and the stump. Please help my bf is calling me a plant murder.