Who is Corinne Bennett, Perla Apfeldorf, Axel Jaeger from Answered Prayers: The Unfinished Novel and what is their importance?

Corinne Bennett, Perla Apfeldorf, and Axel Jaeger are associated with Kate McCloud, as assistant, friend, and husband respectively. Bennett supports and indulges her, Apfeldorf is quick tempered, and Jaeger is cruel and domineering. The actions and attitudes of these three people contribute to Kate's intense vulnerability.