How to make a woman happy
Simple. Ask a question, and listen to her answer. Women love to talk. LOVE to talk. Wanna make her happy to be with you? Ask her how her day was. She'll ramble on for about thirty ****ing minutes, regardless of WHEN you ask her or how little time she has to 'talk'. And make eye contact and at least pretend to listen. (although I recommend listening because you'll inevitably be questioned. "So do you think what I did to Mary was right?")
And she'll love you for it.
Alexi
BTW, regardless of what happened, if you don't personally know the other person involved, then whatever she did was the right thing to do.