Have you sent your PR application? There is probably a higher chance of the visa being extended if you have.
Do you have any ideas of why they only gave her 3 weeks? Have any of those factors changed?
It's possible that provincial health insurance might cover the birth, depending on what stage of the immigration process you're in. This is not the same in every province, so you should check with your particular provincial health ministry. I know that Quebec has exceptions for pregnancies. In certain circumstances pregnant women do not have the 3-month waiting period that other users do.
No, I haven't sent anything thing in yet. I am waiting to try and make the best decision. What do you guys think the changes are of her getting a reinstated visitor visa? I think they gave her only three weeks because we didn't apply for six months. I'm guessing it's better she goes back.I wonder how much medication and that will cost. The midwife thing sounds pretty good, however I heard there is a big line up for one.