OP can I ask why Seskatuan?
I have no experience, but I know that by asking, you then go through the process of assessing why that place.
Others in Canada have suggested other places, but you seem set on this one? Any reason?
Would you consider the move to another part of Canada?
From my perspective as someone who works with kids and families, you are an interesting family.
You are Canadian, your husband European and you live in UK, so your dd has grown up English.
I think that you may need to think about how much your dd identifies as English/British, and how much connection she has with Canadian culture or the European culture of her dad. For example, my kids are half Dutch, we go to Holland every year, but they consider themselves to be 100% culturally English.
So her pespective of moving will be different. That doesn't mean you shouldn't do it. If your quality of life will be better all round, then there are plenty of reasons for taking that step. She will manage and she will adapt. If you do it, do it now, or wait until she is significantly older (eg post uni). If she is to feel totally at home in Canada, it will help for her to do a couple of years in Canadian school.
I think, moving or not, you may all beenfit form reading the book Third Culture Kids - growing up between worlds, by David Pollack and Ruth Van Reken