Walking my kids to school and on the way there was a woman with her dog. There was a road sign blocking the right half of the pavement on a curve and her dog was weaving and about to walk in my path as we approached the sign. I moved in front of the sign so I wouldn’t collide with her dog. I waited til they both moved past and once they were I started to walk again paying attention not to hit the sign with my pram since my son was in the front on the buggy board while his brother was in the seat, the ground was uneven, on an incline with a puddle behind me. I hear her praise her dog and then say as I was moving around the sign “you could say thank you” quite rudely. I turned and said “excuse me, your dog was weaving in front of my path. “ She says I was letting you pass. 
She hadn’t told her dog to stop or moved over to the side I was on so no idea how she was letting me past. Hadn’t even said one word to me until then nor did we do the “you go ahead” song and dance. I just walked off shaking my head in disbelief.
I know I should have just ignored her and not answered to her rudeness, but my level of patience was quite thin (sons waking several times in the night for the past two nights due to colds) and not understanding her issue.
AIBU to think a thank you wasn’t needed when she didn’t do anything?
Should I have said thank you regardless?