Please Say/Whisper the Words out Loud In merit of this learning may Penina Yosefa bat Vichna be blessed with an immediate refuah shleima bitoch shaar cholei yisrael!
More common reasons for why sometimes people can speak negatively about others:
I Life is boring - gossip makes it more interesting. (Pretty sad if destroying other lives is how we overcome our own emptiness and make our lives more interesting)
II What else is there to talk about? (How about how we can help others, the meaning of life, or the thousands of other positive topics?)