MIL was drunk at my son's funeral and Brother-in-law stirred up a huge fight hours before.

My husband and I have been trying for over 4 years to have a baby. After 3 ectopic pregnancies and multiple treatments, we were excepting our rainbow baby! Baby boy came early at 25 weeks. We had 2 beatuiful days with him before we lost him. We brought him home to bury him on our family property. While my husband preparing the burial site, building the coffin and greiving the lost of our son, my husband's brother decided that it was the appropriate time to bring up that he wanted their mom to sell part of the farm which led to a large fight, saying my husband is selfish and doesn't do anything to help their mom ect. For contex, brother-in-law lived in a house on the farm rent free for 11 years and did nothing to keep it up. We moved in and spent thousands of dollars on repairs, roof leaks, wholes in walls, ect. My husband helped her with moving his things out and cleaned out a lot of trash, he helps her out so much more the his brother. AND here he is talking about money on the day we are burying our only child. Then their mom shows up to the service drunk. So drunk she needed help to walk to her seat and back to the car afterwards. She never reached out to us at all after his death nor in the following weeks. I'm so pissed at my in-laws, especially MIL.