Faking a Miscarriage

Okay, don't let the title make you hate me, I didn't fake one. I'm extremely convinced my friend did. About a year ago she went to the hospital one night after she told me she was bleeding a little bit heavier than usual and she was scared she was having a miscarriage. Later on she said she was fine and didn't have one. Cut to nearly a year later she comes out and says she did have a miscarriage, I was extremely sympathetic since I experienced one at 14, until she started adding details. She claimed that at home she took a pee test and it came up negative and then she proceeded to prick her finger, put then blood on the same test and she said it came up positive and that's why she went to the hospital...um okay. She also claimed that at the hospital the doctor told her she didnt have a miscarriage but the nurse came in and said the doctor lied. She also later said the nurse came in and pricked her finger and put the blood on a test she had. She claims that test came up positive and then the nurse, not a sonogram technician, but the nurse secretly did a sonogram which revealed that her uterus was empty because she said the tissue was already passing through her. She says the nurse told her to just pass the tissue at home, and according to her this was all secret because the doctor didnt want her to know and the nurse was going behind his back. She was confused when I asked her if she had a D&C, she didnt know what it was. So she keeps adding new details on that don't line up with how anything works. Also small details are different between the story she told me and what she told her cousin, she told me she was home when she went to the hospital and she told her cousin she was at her boyfriends.

I want to confront her and see what's going on to make her lie about something like this. Thinking about it is making me extremely angry and I can't keep my mouth shut for much longer. Recently she's been constantly talking about how it's been a year since her conception date and she keeps on bringing it up.

TL;DR my friend has been very obviously faking a miscarriage and I need to know how to bring it up and confront her because it's enraging