Congrats on becoming an aunty-to-be! I can't answer your questions about what to do or say. My only suggestion would be to book her into a GP before an ob as she will need a referral to be able to claim the ob on Medicare. She probably doesn't even need an ob at this stage as a GP should be able to book in a dating scan for her. I would probably keep the ob appointment JIC, but get a GP appt in beforehand and request the referral. If she is a broke as you say, she may not be able to afford an ob for the whole pg. HTH