Are we wrong for not helping out my husband's family and using the money for a vacation?

My husband had been putting money away for my step son's college since he was a baby. He wanted to make sure he walked out of college debt free and most of his family knew about this college fund. If my step son chose not to go to college than he was just gonna give him the money anyway and my step son said if he chooses not to go to college he's gonna use the money and him and my husband will take a trip to France together. But my step son decided when he was 16 he was going to college. He found out he got into college and was support to start on August, but last week his motorcycle was hit by a truck full of a bunch of drunk college students and he sadly passed away on impact. I've completely taken over planning the funeral because my husband fell apart. I asked him about the college fund and he said he guesses he's gonna go to France. He's gonna go to the Eiffel Tower and drink for him in honor of him because he knows that what he would have wanted.

My husband's mom reached out today pretty much asking if my husband would be willing to use the money to help her and his siblings out. She's facing a foreclosure and his sister is also facing an eviction all while going through a miscarriage. His other sister is behind on bills. She pretty much reached out to ask him to use his dead son's money on them because they're either facing homelessness or don't have electricity. Etc, etc. My husband told her no and said they can all fuck straight off.

He hasn't been in contact with his family for two years. My step son was openly gay and came out at 16. When he did my husband's family turned against him. Said some very nasty things and said he either lives in the name of God or they want nothing to do with him so my husband stood his ground and blocked them all out of his life. Now his mom is coming back 2 years later with not even a "Sorry for you loss." Her exact words were "I heard what happened to Malcolm. Any plans with what you're doing with his college fund?" It's so heartless and I completely support my husband but he's being told that leaving your family struggling so you can go on a trip is wrong. His uncle told him his son is dead so he needs to save the only family he has but my husband doesn't want that family