So, my mother was recently a victim of email phishing and got her gmail hacked. This happened after I have giving her as many tips as I know on avoiding those scams. So my question is this...

Should I phish my own mother in order to try and teach her and show her what to look for?

I think that practice makes perfect and seeing what to look for in a safe and controlled environment might be the best way to show her what to look for.