I won't get into the long version, but girl I have been dating / fking for 2 months was a bit flaky and what I perceived as disrespectful, so I froze her out for about 2 days by not responding, then she wrote me a long apology - I went over to her place ltr that night and told her that I would not tolerate it and that I was done. She was very upset and emotionally asked me to reconsider and that while she knows she was wrong it was a bit severe and rash to throw everything away. I told her I would think about it for a few days and I would contact her when I am ready.

I think this is effectively getting my point across that I won't put up w being disrespected and that I am not afraid to walk away. Is this effective freeze out when she knows that she is being frozen out? I said I would decide and contact her when I am ready...

Don't EVER tell a girl you are upset. Keep the emotions positive.

People vibe off of your emotions. What you put out is what other people take in. You should have told her you were busy since she decided to apologize.