It means that she acts in appropriate ways depending on the situation. She is great to travel with. We can take her anywhere and she acts "appropriately". She plays with other children well and is generally fun/easy to be with most of the time.
I take care of her by myself a couple of days a week and generally spend a lot of time with her. We play together often and generally do well together but there are infrequent times when she doesn't want me and will tell me so.
She is our first child so my relationship with her is a learning process with its ups and downs, but it has been an amazing experience so far.
I think with any thread here there is good advice and bad but usually you can find some great information here.