Dealing with pregnancy guilt while cousin is going through miscarriage

My cousin’s wife found out she was pregnant back in October and has had multiple hospital and OB visits. Sadly, her OB and the hospital both have told her she is miscarrying/had a chemical pregnancy and she is in complete denial of it. They’ve done scans on her, even transvaginal and have found nothing, hcg levels dropping etc. Only like a few days ago did she finally stop bleeding and passing small clots and she’s still holding on to the hope that she’s pregnant, despite what the doctors have told her (she’s calling them idiots). She called me 2 days ago and was ecstatic about her tests still being positive, even the lines are barely visible now, and has still been buying loads of baby stuff. I feel awful because I want her to be pregnant and have a healthy baby, but at the same time I don’t want to feed into her delusions whenever she goes to get another scan. Her scan is this Wednesday the 29th and my anatomy scan for my little girl is on the 30th. I’m just feeling so guilty for that and feeling like I can’t talk about my pregnancy without it making her bad or something like that. Has anyone else been through a similar situation? Any advice please?

Edit: to follow up she would be roughly 10-12 weeks but nothing has been found on any scans