IS IT BAD BEING STRAIGHT FORWARD?

Got a call from my kid sister this morning, informing that she had arranged for Mother's birthday to be celebrate earlier.She suggested  the coming Thursday night.Then She enquire how was work? So I told her well like that la. She asked for clarification what do you mean. So I said well just passing time. She got upset and said how can you said like that. You should take this as if is your own factory.  I was just saying from my heart , no beating around the bush.  Was it wrong to be honest?  You see I am working for her husband and her expectation was I am  to look into their interest.   I know I had done that , just that my answer was not to her satisfaction.  All I can say is too bad sis, that's the way I am.