I guess we're just different. Majority of people would never say those types of things in person, which is why they say them online. The fact you even got remotely upset about it is entertaining to them. I mean it's all pretend, there is legitmately nothing more they could do other than provoke you. After the match, your wife could report such behavior, requeue and continue on playing. I can guarantee by the time she ever came across them again, they'd have forgotten all about her.

It's PvP, you will find this behavior in any game with it. It's a mode where people get enjoyment from killing eachother. There are far darker elements in this game just in the MSQ alone