For some reason I think of samotna more as lonely rather than alone. Would it be appropriate to use sama instead of samotna?
I agree completely, I will change the default to "lonely". Yeah, "Nie jesteś sama" would be "You are not alone".
Says the Face of Bo
How can you tell someone they are not lonely. Except if you are a doctor telling them they are misinterpretating a different emotional state. Telling them they are not alone. As in you are there with them would be possible statement
You are not alone
"Nie jesteś [sam/sama]".