accidentally complimentary

This happens when you are speaking with someone that you really don't like and you somehow pay them a compliment which causes you to despise yourself for they now know that can recognize a positive quality in them. I have done this.

Emily: "Christine, I don't know how you made that situation work out for the best considering your lack of training. I guess you're just a natural."
Christine: "Thank you, Emily! I thought you didn't like me."
Emily: "Ummm. You are just fine. (in her mind - You dumb-ass doing the accidentally complimentary. Now she's your pal)