In laws are bugging out

My husband and I had twin boys at 28 weeks due to complications, at the time we were newly married in a long distance relationship, it was an hour distance, but when we had the boys the better nicu was in the city where my husband stayed so I moved there. It made sense. My husband was the primary breadwinner, working long hours keep that in mind

The twins were fine, the oldest was diagnosed with CP his family offered to help cuz we all did the research and caring for a child with CP is hardwork so they wanted to be a part of that and they were until my husband's parent split.

They had new financial responsibilities we were understanding of that so we only asked them to babysit when we truly needed it. For instance my son goes to see neurology three times a year, I asked my sister in law to babysit the other twin the hospital has a strict policy due to COVID. She said no she was tired I had to cancel but she went to a concert days later. Her prerogative but it made me feel a way I won't lie

I never addressed it I just put my head down and did what I had to. I have a small business after much hard work I got alot of consistent good business. So much so that I could move closer to family who offered to help and I also could afford a part time nanny/nurse

We move from GA to CO, I hired a part time caretaker I only ask my family when I really need them. Everything was fine until my husband's family started complaining about how everything went down and how we didn't have to move when they knew I was struggling drowning in depression, doing everything myself, I even pulled a muscle from so much heavy lifting of my son's equipment. I understood this was my child but I still needed help they couldn't help anymore, I didn't fault them for that even though it seemed like they didn't want to help. They would tell us they're too tired but end up at the mall or concerts which I feel like that was their right but be straight up with me. If you didn't want to help just say that. Its been a full year and they are concerned that the twins will forget them and they won't know the new baby

And somehow all of that is my fault.... how?! What did I do wrong?!