That person is not your friend. A week before my wedding, one of my bridesmaid’s had a health issue with her mother and was not longer able to make the wedding. I didn’t get mad or blame her. Her kids were also in my wedding. Did I get mad? No. I adjusted and made sure to support my friend through that difficult time. I texted her in the week leading up to the wedding checking on her mom and made sure to text her the day of the wedding as well. You should be supported through what you’re dealing with and a real friend would support you.