My friend had her second baby last summer. We saw the baby once and since then on a few occasions our friendship group has tried to arrange to meet her and she will say she can't see us as she is fully booked for the month. No-one is that busy they don't have 20 minutes to see someone, we are willing to go to her home or nearby for her convenience. We still saw her when she had her first baby.
I know having a family is hard work but it's sad she doesn't want to be friends with us anymore. When she first met her husband she was obsessed with him and gave up her friends and hobbies and would only meet up with us when he was out with his mates. It was strange as when she first met him she rejected him multiple times and they don't have anything in common. I suppose her focus is her family now and friends don't come into the equation.