Mom is falling victim to online dating scam!!!?

So a few months ago my mom was on a free Christian dating site(not Christian Mingle), and she met a man named Alfred Larsen. He said he lives in the US(she lives in Canada), and is currently on a working trip in Istanbull on a project. I ve seen the conversations and his grammar is fine, there s no discrepancy there and he gave some personal info. He also exchanged pictures and I reverse searched them but got no results. Most of those pictures are blurry, or of poor quality, I m thinking they re edited so there will be no results when reverse searching.. He calls her "babe" and expresses his love for her, etc.

Recently he said he wants to see her, and is going to fly to her, he even sent a picture of a plane ticket to her city(I didn t see the picture). But there has been a complication and needs lots of money($17,000!!!). She was going to send it! I am trying desperately to get through to her. She has had these scammers come up before(all with the same story as this guy) and as soon as we reverse searched the image and proved they were fake, she ceased contact, but this guy is obviously smarter. I ll get her to read the responses as second opinions but PLEASE how do I get through to her?!?!