I can totally help you out! I live in Quebec and I know the levels pretty well. I will link you to the website and the english docs that are availble. The girls ages are significant here as they could point the girls to either provincial or national gymnastics.
A level 6 gymnast would be either P2 or P3 in Quebec, though if she is very young there are national levels that could fit as well. A L9 gymnast, depending on her age, could be a P5 or national level gymnast.
There is also a developmental programme aimed at the 4-11 year olds called Defi which is worth a look at mfor your little one, the docs are all on the Federation website, but are only available in French.
Here is the link to the Quebec version of the CPP, Canadian Provincial Programme, translated into English. Link Removed
Here is the link to the Quebec gymnastic federations website Link Removed. Most of it is in French of course and there is no English equivalent.
We use the FIG scoring system here, just like in Elite gym, and that takes some adjustment. Also our girls tend to only compete in 3 or 4 meets a year. All our levels are optional and within each of the levels the girls can perform a variety of skills, makes it very intersting to watch and plays up to a gymmies strengths.
There are some great clubs in the Montreal area, clubs away from Montreal tend not to be as successful or prolific in producing great gymnasts due to geographical issues.
Ask anything you need, I imagine relocating for work is a huge deal and with children it just gets more complicated.