I (kinda) need your opinion.

I met a person and we became friends, it's my first time having international friend too! but since we're so culturally different and i think we were not really that good communicating with each other. I'm from southeast Asia and she's from egypt, we're totally different. I'm not even gonna lie her life seems soo bright and happy there and comparing to mine i have a lot of problems and problematic family issues.
I don't want to compare but my mind haven't feeling at ease since it's her birthday few days ago and i just send her some basic apraises and congratulation words..
It somehow bother me that before we use to talk openly and talking in diversity, but now it's only an emoji reply's or stickers.. i don't mind but is this the beginning of the end of friends? Like you know them first as stranger, then get close enough that there is no more fun information and just faded away like that?
Sigh... i genuinely starts my new year with such a useless anxiety..