I think some are mixing up appropriate and understandable. Sue going on the attack wasn't appropriate, but was completely understandable. Many parents would feel the same as her. She could have handled things better (and usually does in situations like this) but it makes sense. People react differently depending on the situation, and Sue taking no sh*t when it comes to her kids has always been her thing. She could have defintley handled it better, but characters can and should make mistakes, just like real people. Especially understandable ones like this.
Plus none of her "attacks" where offensive until the big fight in front of the Krakoan gate.
Putting Magneto in a ball is emabarrasing but not life threatening or anything lol. People were talking about her putting up a force-field when they first came to her door and I'm thinking: So? It's just a force-field, it's defensive not offensive in nature. All it showed is that she didn't want them to come in.