Wow your poor sister!
I would have made a complaint ,no one needs to put up with this!, she has no right to talk to anyone this way, and it sounds like she didn't even know how to do a scan properly

They should always check the tubes and overies while doing the scan as well, they thought my baby was ectopic and they checked all over ,which should be routine as far as i know.
They saw my baby at 5 weeks 6 days .

I really hope all goes well for your sister , i really hope it picks up for her ..Its great that you are being so supportive ,