Sorry to hear about your sister. I am a Canadian citizen and was recently back there for a visit. Because it had been so long since I was home, my medicare was expired and I was on travel insurance, I found out I was pregnant over there and had such bad pain I thought I was having an ectopic, my insurance covered the ER visit and ultrasound and would have covered the surgery to remove it had it come to that. I think they cover any emergency situation as long as it was not a pre-exisiting condition, so if your sister got pregnant after cover than she may be covered for it, especially if she can get the doctor to say it is an emergency situation. I hope everything works for the best. It is so stressful being away from home and not having your usual medical care available.