I cant for certain say what she meant and i hate to disrespect her memory by misinterpreting her message. If she laughed after saying it in a good way then i doubt she had any malice or slickness behind it.
I will say this in terms of hating white people, in my experience its lowkey an exercise in futility. Its like hating a virus, or hating flies or roaches or any form of pestilence. Sure its justified but ultimately its pointless, because its not even them at the core i hate. Its the demon/entity in the drivers seat. And it plagues all races, its just prevalent in white folks. Particularly from the perspective of those they ancestrally seem to hate. And that entity only thrives on that hate, so ultimately the only person that hate negatively impacts is me.
That is probably the most nefarious trait of pure evil. It literally feeds off the negative emotions it produces, sustaining itself through its very nature.
Like a plague or pestilence, the best thing that can be done imo is to avoid it altogether. Thats why we have medicine and pesticides after all. Keeping that shyt at bay.
Forgiveness and love are important in defeating that evil, but not toward them. That is just dangerously naive. Evil will only exploit those emotions, it wont defeat it, despite how feel good that all sounds. Its ourselves and eachother we need to love all the harder and forgive to keep this great evil at bay. It can not exploit love and forgiveness in that form, but that love and forgiveness will steal a lot of that hatred's power all the same.
I doubt that is what ur grandmother had in mind, u never know, but whatever her message im sure it was a positive one, and one day u will figure it out. But i hope my own words are helpful to u in some way brother.