Doesn't it irritate you when your kids do this..?

My niece took her very first steps yesterday. I was so looking forward to see her doing that again today. But for some reason she wasn't interested in walking at all today. She's been acting up whenever we wouldn't take her "walkie" all week. She was taking our hands and demanding we walked her across the flat until she finally took steps without being held yesterday. And today nothing. She just wanted to sit and watch tv and sleep and play with her musical board and teddy bear. So disappointed. She finally treated me to a bit of walking just before I went to work, a series of 5 steps on her own (she only took 3 yesterday). But then I had to go to work!