A man mistakenly sent his daughter a voice message that would change the way she saw him as a father. Is there any way to unsend a voice chat?

Or did this dad fundamentally dismantle his relationship with his biological daughters every step of their lives? The answer to this riddle lies somewhere in between. Of course, the dad should never have abandoned his two daughters when he set out to make a new family with his future wife and future stepdaughter, but for nearly 3 decades, he treated them unfairly, only to have this betrayal ultimately revealed by a mis-click on his voice message recipient. 

Looks like this dad should have learned to use his phone, because his biodaughter went straight to Reddit’s r/relationship_advice subreddit forum to vent about her frustrations. If I were in her situation, I couldn’t help but wonder if this was a relationship worth trying to save, or if you’re better off letting the wedge push deeper between this split family. Her sister says to go no contact, but what do you think?