Wait, why do you think it backfired? Because of her reaction? If you are basing your success or failure on her reaction then you are doomed to fail in DBing.
Your 180 was in validating her feelings on not wanting to get up in the morning. I assume by her reaction that was a 180 for you.
Listen. Validate. Ignore her reaction.
Your validation and then you not reacting to her reaction brought a proper close to your discussion last night. Trust me, the fact that you validated her feelings had an effect on her. Even if her reaction wasn't what you wanted (again, you should have no expectations, a primary principle of DBing).
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018