1- Am I able to sponsor her child without adopting ?
2 - Do I need to complete any procedure for my divorce here in Canada before I re-marry outside Canada? (on my NOA the status is divorced)
1. Yes, or more accurately, you will sponsor her along with her dependent child (as long as the child is still under 22 and not married etc).
2. No. You will need copies (translated/notarized etc) of the divorce decrees/court order, of course.