It's something I've worried about, as well.

[because as mad as she may be at Obi-Wan at the moment, she doesn't want him hurt or killed, and she knows full well that's exactly what will happen to him in her time.]

I've spoken with Master Jinn about him, too, and I also mentioned this to Luke. Between the three of them, I have faith that at least one will be able to do something about him.