Unless you know the funds would not be used in a charitable way, I would honor the deceased last wishes. I know some very good Catholics and some racist hypocrites, there is good and bad in all walks of life.

I think it would be wise to follow Marionville's advice, which is where I was going, before I saw it.

I don't know why money should be a part of grieving but if you feel you need to contribute something to satisfy that request, donate quietly to some charity your cousin would have also approved. Food pantry, homeless shelter, etc.