Who are Sybil, Skip, and Alice Blue Bottom in the novel, Woman on the Edge of Time?

Sybil, Skip, and Alice Blue Bottom are fellow "patients" in the mental hospital in which Connie finds herself, and become fellow "subjects" (guinea pigs) for the experiments conducted by Redding and the other doctors. Sybil is portrayed as tall, elegant, self-willed and strong, and as believing that she is a witch. Skip is bisexual (leaning towards the homosexual), outspoken, flighty and passionate. Alice is also outspoken, but to the point of violence. All three are, to varying degrees and in varying ways, inspiration for Connie to make her stand against the destructive power and control of the doctors.