I am in a LTR.

So my partner asked me at 9pm if I feel like bringing her dessert all the way to her house. I said No (Thats out of character for me... normally I try to avoid confrontation). I said you will get sick. She said but don't you love me? I then said it is too late at night. She then went off at me - saying that I pretended to be concerned about her health when I cannot be bothered driving to her. (the truth is I really can't be bothered driving all the way there and I think its rude to even ask that).

Where do I go wrong? Should I just be honest even if it lands me in trouble?