How to Help the Victim of a Love Scam

Advice column #34

Chinese punishments, Punishment of the swing, inflicted upon merchants found guilty of frauds, impositions and other tricks of the trade, Illustration by English painter Dadley, from the book The Punishments of China, London, 1801, (Photo by Leemage/Universal Images Group via Getty Images)

My elderly father's wife passed away in April and I'm concerned that he's being financially exploited by his new "lady friend."

Roughly $100k at this point. Aside from the obvious (invoke Power of Attorney, talk to law enforcement, etc), do you have any advice? Especially how to handle this on a personal/emotional level?