I am so sorry for your loss.
I understand loss and I am sure most of us can understand how the geographical distance can put a strain on relationships.
My younger sister passed away from injuries sustained in a car accident a few years ago. Then our brother followed her 9 months later.
As they were both cremated by the time I got back to the US for their funerals, I don't think I fully accepted that they had passed away.
You may experience something similar. It is an odd sort of limbo, where you don't quite get closure.
For me, it took years. Not until I saw their headstones in person.
I also saw a wonderful therapist at Cruse Bereavement Care.
If you find yourself still struggling, it might be worth reaching out to them at
https://www.cruse.org.ukI wish you all the best.
Side note: my surviving sister and I communicate using the app Marco Polo. You record a video message and the other party (parties) can view and reply at their leisure. We have found it is the best solution to the time difference. We can still see each other and gab.
Maybe give that a try for communicating with any family members back home.