Would you be upset with a family member in this situation?

My husband’s grandfather passed away a few weeks ago. The memorial service is scheduled for this Saturday, with the long wait due to several people in the family having already booked vacations.

My husband’s cousin and his wife have decided not to come to the memorial or the post-memorial gathering, because it’s opening day for their sons’ baseball teams (the boys are in grade school) and the mom and dad are also coaches. The cousin said, “The memorial was worked around everyone else’s schedules, but not ours. We can’t miss baseball.”

My husband and the rest of his family are scandalized and a little bit angry. Should they be, or does the cousin have a valid point? He rejected the idea of coming to his grandfather’s memorial alone and letting his wife stay home to take the boys to baseball. How would you deal with it if a family member reacted this way?

I don’t know if it has any bearing, but my husband’s family are slightly old-school Italian. ;)