Who is Jenny Hall from The Risk Pool and what is their importance?

Jenny Hall is Ned's mother. When Ned is younger, she is his rock, but Jenny develops severe emotional issues and ends up in the hospital and then a nursing home for a few years. Jenny is a very pretty woman. She works for the telephone company until her psychological problems get the best of her. At the telephone company, Jenny chats with people from Arizona, New Mexico, California and other exotic, warm places (where Summer is capitalized).