The 6 month "waiting period" you refer to is a residency requirement in a calendar year, not a waiting period. If you make your home in Manitoba for at least 6 months of a calendar year, you're OK. It's designed to stop otherwise covered people from living full time somewhere else and coming to Manitoba just for medical treatment. As always, there are exceptions.
I thought I had "clearly established" that BC and Manitoba have 3 month waiting periods. They obviously do, that's why I thought it was clear. The question is, do the wait times apply to Permanent Residents? They "may" not.
We can play "who makes better use of sarcastic quotation marks" all day long but at the end of the day, the OP should contact the government to see if she's covered, which is what I've suggested.