I am very curious as to why an ex wife, who had numerous affairs on her husband and lost him because of this..?

would continue to constantly call him after 10 years of divorce about her car, about her job etc. It seems as though she won't let him go. She drives my husband crazy and from time to time it really starts to bother me. Any ex wives out there that can explain this insanity? I know my husband isn't leading her on, they still have children at home he can't totally ignore her.