What's the official rule for influencing a pot you're not in?

context/disclaimer: This scenario happened at a micro-stakes home game. I'm just curious about how something like this would play out in a casino or some official setting.

The scenario: 4-ways to the river (as micro-stakes games tend to be) and all 3 villains are making it painfully clear that they are not confident in their hands. Hero bets somewhat large with two-pair hoping to chase everyone away. Villain 1 and 2 snap fold. Main villain (my dad) takes a few seconds to think about it. He thinks out loud, talking himself into a fold for maybe 10 seconds, saying things like "Man.. I kinda want to see what you've got. But, I don't know..." My wife, who folded pre-flop, gets impatient that he's thinking about it and chimes in to egg him on with comments like "Oh come in, it's just a couple bucks. Look at all that money you've got." She keeps hounding him not to just make a decision, but hounding him specifically to call. For what it's worth, main villain had considerably more chips than me. Main villain gives in to her and calls, showing a better two pair than mine.

I know that sort of behavior is terrible etiquette. But, I don't know the official ruling on something like that and am curious what the consequences/blowback would be if someone pulled something like that at a casino. Since this was a private micro-stakes game, I just stewed on it and sat pissed off for a few minutes.