Faith is discussing her selves.
Step-by-step explanation:
Faith is an independent woman who follows her happiness and finds her peace both in her work and family. She is 46 but still giving sufficient time to analyze herself by having a discussion with her sister about her thoughts regarding her promotion and her fear of growing old alone etc.
This depicts she have different bonding with her sister with whom she feels comfortable to keep her raw thoughts. Discussing own self shows that they understand their importance and want themselves to keep growing.