μὴ πόνει, ὦ Ξάνθια, ἀλλὰ ἔλθε δεῦρο → Don't keep suffering, Xanthias, but come here.
stubbornly: Ar. and P. αὐθάδως, P. σκληρῶς.
mercilessly: V. νηλεῶς, ἀνοίκτως, ἀναλγήτως, P. σχετλίως, P. and V. πικρῶς.