It sounds to me like she was saying the 'talking to' in a tongue in cheek manner, as in she's trying to say she thinks he's normal. I'd take it that she doesn't want you to worry that your friends are judging you for his behaviour - that they are absolutely not. That was just my interpretation. You know her, of course, so would know the intention. .
i do understand it can be frustrating though if you think there is a problem and noone will listen. If that's what you mean, then, yeah, I totally get how that can be a big problem too. And its never nice to know people are talking about you behind your back.