Cassie

Bree used to talk to her but she did not approve of Bree's religion. Hence they no longer talk. All that is known about Cassie is that she used to walk around the track with Bree during the latter's brief stint in public school. Daniel claims to have no knowledge of Cassie. It later was revealed that Bree and Cassie did interact outside of school for a bit, but after hearing about Bree's religion she got "freaked out" and stopped calling Bree.