Hi Zabrien, I'll try to help but without a context and your friend not being good with Grammar and Spelling, not sure about the result.
estraño: this can be either
I miss you or
misses somebody else from the verb extrañar or she can be referring to something
strange...
pais: country
alli: there
chistas: not sure about this but if it's correctly written can come from the verb chistar which can be translated as
you reply but very informal...I think it is something else, so if you can post more context for this last one...
