My 3 year old girl doesn't always nap anymore but OMG when she does she wakes up in a foul mood, particularly if she's strapped into the buggy. She cries, screams and kicks. It's impossible to reason with her, so I end up undoing the straps and just walking away saying something along the lines of 'come see me when you're ready not to shout'. The mood can go on for some time (us usually until she's eaten something). Her behaviour when she's tired or hungry can be pretty wild too. Any tips please? I'm so tired of it. It's ruined many an otherwise good day.