pkpk was crying last night and now her eyes are swelled up.  Tears are strange; you cry when you're happy and when you're sad.  This discussion of tears reveals a terrifying plot!
pk-chan, I don't think that's what 
crying yourself to sleep means.
Piku-chan, no creo que eso sea lo que signifique llorar hasta dormir.
Piku-chan, no creo que la gente se refiera a eso cuando dice que uno llora hasta dormirse.
Pkzinha, não acho que
 seja esse o significado disso.