What do you think about me arguing with my already-upset wife about our daughter's interests?
Why do you want to bring this up now that she's upset?
Because we argued about everything else. We might as well argue about this too.
You shouldn't continue to argue if she's upset. You won't get a rational answer from someone who is upset with you already.
Like I was saying before you rudely interrupted me. You see, she's just like her mother. She forgets her roots, her cultural heritage.
Arguing with your wife when things are already bad is wrong.  It will only create more tension and problems between the both of you. It would be wise to give her time to cool off before bringing up another topic.