There are two sides to the coin. One - it's an easy option. I do that too. Especially if this is something big with distant family. Instead of focusing on the real reason why we are there, they make comments about my stutter. I also have Tourette's, so they don't let that slide either. Comments, weird looks, people telling me to stop disturbing - I don't go because it's easier. Even with my close family I don't feel comfortable. Two - you should go, if your stutter is the only thing stopping you from going. Don't do anything you would regret, avoiding is never the solution. It's just running away. I don't judge your willingness to avoid these types of meetings, I do the same. But I think that the best advice is to go. If there is at least one person chill with your stutter, you will make it. Talk to them, and ask of you can hang close to them, if that brings you comfort. Hopefully noone will be an ass and will focus on the real matter, but if this brings you comfor to have someone by your side, try to do this. Good luck and I'm sorry for your loss.