Help! I need a translation!

Oh this is fun! My sister speaks French as well as English. So she started getting smarty with me. So I sent her a letter in Chinese. She thought that it cool, and now wants one in Arabic. It is sad to say that I can not write such a thing, however it would be fun for me if I could send her one. So if anyone can translate this please give a hand in doing so.

My dear sister,
You are so funny! Can you not see that the world is one? As one people we have no reason to be aggressive. All that separates us is a lack of understanding, it is just a language thing. So now, study your languages, and then you can write me back in the language of your choice. I will be pleased to to attempt to understand.

Cheers…

I can translate it for you just PM me what you want to send.

本当にありがとう

1,2,3,4,5,6,7

Just taking up required letters…