She is the same person. Family Court Records in the 90's (maricopa county) list her.
When I saw that a few days ago, I was wondering how a "13 year-old" found Alex Cox when the Family Court Case was in the 90's? Explained now.
Yes, the son in the 911 call is named after her first(?) husband. Strange that he didn't know Alex's last name or that they were married. Nothing is ever normal with this group ... always an agenda.