Like Siberious said your best bet sans charm is going to be alternating between having pet tanking and healing it (dispell shadowbond curse on yourself if able to) and you stepping in and Deflux-tanking.
Depending on the mob it's fairly high risk, but doable. Here's a video of me soloing one of the PoMischief halflings. Believe those are 55 (though probably overcons)
https://www.youtube.com/watch?v=3WGCGIksrvs