It would have 'melted your heart' [=it would have filled you with compassion, sympathy, etc.] to see her lying in that hospital bed.
Her anger 'melted away' when she saw that he was truly sorry.
He seemed to 'melt into' thin air. [=he seemed to disappear]
(..) the Anti-Villain League. An ultra-secret organization dedicated to fighting crime on a global scale. Rob a bank, we're not interested. Kill someone, not our deal. But you want to melt the polar ice caps, or vaporize Mount Fuji, or even steal the Moon... Then we notice. First of all, you got (..)2013 Despicable Me 2