Welcome,
Boy, your wife must be hurt at her family's actions. Women plan and dream of a wedding, and having family members there to support the marraige. Does she see how abnormal her family & the KH elders were acting?
I had a similar thing happen. Both of us were raised in the Truth, but not baptised members. My parents decided that we HAD to be married in the KH. I didn't go, and didn't want it. But, it was my overbearing mother's plan. Thankfully, the elders wouldn't do it. So, that got my mom ticked off at me for not being a goody-JW. The next thing she concocted was to have my sibling (who is 18 years older) move in with us newlyweds. I wasn't asked, I was told that this was going to happen. We didn't have an extra bedroom, I put my foot down, she went ballistic, neither my mom nor my sibling came to my wedding, and she didn't speak with me for 3 months. It was a blow, but I thought of it more of her & my sister's mental issues.
All got normal, and we later had a baby. That's when my family sent local elders, JWs, and even they came to the house to try to convert us back to being JWs. I had to tell them all to go home. When they used to come to visit, they'd try to preach to my kids. I had to teach my kids how to avoid JW conversations. Luckily, I had a non-JW spouse.
Your situation is different. You need to look at the blood transfusion issues. Pregnant & birthing women & premature infants are more likely to need a blood transfusion. www.ajwrb.org.
JWs are idealists, and to hold up an ideal . . . they will do all sorts of abnormal, silly, and hurtful behavior.