Should I wish a girl I like, good luck for her exams and when would be the best time to do it? And what would be the nicest/cutest way to tell her?

XanChrome
She:
- 18 years old
- Lives in London
- Has 2 important "A" level exams, one tomorrow and one on Friday

Me:
- 16 years old
- Lives in an eastern country
- Similarly, has 1 important "O" level exam tomorrow

Note: There is a 5 hr difference between our countries

Backstory if needed:

We met each other online at a forum (which I am a staff member of)
She posted a request at the forum and I fulfilled it quickly
She was grateful but also needed extra assistance, so we used iMessage Chat and Kik as communication
After that event, I started conversations with her regarding various topics.
We had fun sharing compliments, opinions, ideas and etc
Ever since, we have become good friends...
Should I wish a girl I like, good luck for her exams and when would be the best time to do it? And what would be the nicest/cutest way to tell her?
3 Opinion