Sal, imagine the situation was reversed. Imagine it was you who had died because of whatever (some accident, disease, etc). Imagine that you had arranged the money to go to someone you cared deeply about, enough to say you wanted to move oversea with (if I understood correctly). Also, that person who deeply cared about had some problem for which money could help, so you made sure to put that person on your will because you wanted to support them - but then death happen and catches you unprepared.
Now bear with me, even if you don't believe in afterlife: what would you think as a ghost? For the person you deeply cared about, wouldn't you wish for the best and the happiest life possible?
When you brush with death, these kind of thoughts come to you and you realize that there is only one important thing: that people be happy. I know about that quite well and I unfortunately have some scars to prove that.
On the "being happy" list, maybe you think about your friends and family first, not just because you love them, but because you know them better than say a random person in the street or some other family member. But eventually you come to have this kind love for every living person, and just want everyone to be happy. There is just some small priority because you know some persons better than others.
But for everyone to be happy, there is one important person to start with - yourself. You can not really bring genuine happiness to anyone if you can't even bring it to yourself. So start slowly: let the grief go, then think about how your friend, if alive, would have cared about your happiness. That does not exclude other persons: it only put you on top of the list, because of knowing you better. Then you can allow yourself to be happy.
It is a tough process.
For me, even after brushing with death myself (and not just once) it took the death of one close friend to understand that I did not allow myself to be happy. To finally start HRT. Unfortunately, that good friend will never know who I really was, because we lived far apart, and you can't really come out to an old friend when you only visit them a few days every other year. I still regret that, but at least it gave me the willpower to be walking my own path.
Don't ever think about the money. There was no money between my friend and me, except a small debt I was too ashamed of to give the money back to the family. So instead, every year, there will be the best flower I can get on the grave thanks to online flower delivery. It hurts me deep inside, but that is all I can do to honor the memory of that person who I deeply cared about, and who also deeply cared about me - even if my age was like only half!!
There is no magic formula. Just allow yourself to feel everything. Putting things under the rug is generally a bad idea.