Police arrested Pursehouse around 4:30 p.m. Saturday outside a home in Playa Del Rey. Jail records showed he remained jailed Monday on a $2 million bond.
Rudy Torres, who was friends with Harwick, told KCBS-TV that he felt the system failed the doctor because it "will not act until something happens."
"It's always too little too late," Torres told KCBS-TV. "I was there when it all started and they didn't do much for her then, definitely didn't do anything for her now."
In 2018, Harwick became engaged to Carey, 61, though the couple split less than a year later, USA Today reported.
Harwick worked as a licensed marriage and family therapist. In 2015, she appeared in the documentary "Addicted to Sexting," the Los Angeles Times reported.
Authorities continue to investigate.