DD2 is 2 and a half. She sleeps really well and eats really well. But she's often not very cooperative. I wouldn't say it's her behaving badly as such, just certain situations/scenarios cause her distress. For example, if we normally walk a certain route on our way home but we need to go a slightly different route for some reason, that will really distress her. She'll cry, run in the opposite direction to me, throw herself to the ground etc. She still uses her pushchair as we walk a lot. She has a bunny rabbit that she takes everywhere with her and if she's not in the pushchair, she needs her bunny rabbit to be sitting in the pushchair and it must be buckled in. If she's in and unbuckled, that would cause her a lot of distress. Changes to the usual order of the day can really upset her. Sometimes this looks as though she's being really naughty when we're out in public but I know that she is genuinely distressed. I talk to her calmly, always try to explain things to her (in advance where possible), I do tell her once she's calm that we can talk about these things and she doesn't need to cry.
The rest of the time she's actually very calm and chilled out. Although, she's not the most affectionate - she can be affectionate to DH and I at times but not so much to her sister @ others. She also likes things to be on her terms (this is not something I give into though).
DD1 was very different to this so I'm just curious as to whether this is normal 2 year old behaviour?
Really grateful for any advice 
thank you.