I doubt she has the time to go and check her messages heaven knows how many are there plus there is the possibility she deleted it in error who knows all I am saying is giving her the benefit of the doubt may have been the best way forward your text could have read 'looks like it was a communication breakdown I can't make it tomorrow but we can arrange another time'
You still can salvage this btw just text her and say you overeacted a bit and were a bit rash which should bring things back to the way they were before all of this happened.