There is nothing mysterious about a miscarriage. They are common. According to the Mayo Clinic:

> Miscarriage is the sudden loss of a pregnancy before the 20th week. About 10% to 20% of known pregnancies end in miscarriage. But the actual number is likely higher. This is because many miscarriages happen early on, before people realize they're pregnant.

https://www.mayoclinic.org/diseases-conditions/pregnancy-los...

Subjecting a person who is already upset about her miscarriage to a fruitless investigation is cruel and stupid; I’d prefer to live in a society where we understand that miscarriages happen as a part of nature and don’t need to further torment the people who suffer from them.