I’m Frustrated with My Mom Friend’s Husband Who Doesn’t Help with Childcare

I’m a woman in my 30s who is raising three children. A mom friend whose children go to the same nursery school as mine became pregnant with her third child. She seemed to be having a hard time taking care of her children by herself, so I offered to help in different ways, like looking after her children when she felt unwell in her final month of pregnancy.