How is your life overall? Are you a single mom or having money problems, etc.
I mean, sometimes we are having really bad times, and we put our frustrations towards the people that can hurt us.
6 years can be hard too, all years are, but there are ones more than others.
I remember my daughter at this age, she talk none stop
and they were not even real conversations.
Mom, what would you do if you were green?
What would you do if a elephant would ask you to become rice?
Of course when I was calm and no so tired this would become very fun conversations, but when I was tired, worry, stress, it was so difficult to find my silly self and keep it up with her.
Another possibility is that that your life have change (all women life change when having kids) and you wanted or not, blame her for the difficult changes on your life?
Or maybe you are going through a depression that doesn't have nothing to do with your daughter but you are unable to be happy?
Unfortunately, I am not an expert and I really don't know what to recommend you besides give you my point of view and tell you about my relationship with my now teen.
When she born I was very young, uneducated and all alone.
It was a very difficult time in our lifes, and many times I was so tired and so worry I could slow down and enjoy her, I felt really bad about it but I couldn't help myself.
I often had thoughts that it would have being easy if I didn't have a kid so young, or if the father wasn't a .... no so nice person
Something that help me was to keep telling myself: Be a good mom today.
I know it sounds stupid and simple, but it help me.
Are you a SATM? maybe you need a break during the day and just go out and get away for home alone, just relax.
I was a working mom, and sometimes had a bad day at work and come home to find mess, and obligations and the little one wanted to play and it was hard, and many times I lose it, and I feel very bad about it. Others I manage myself and told myself be a good mom today and lets see hope tomorrow is a better day.
Oh, and something I learn.
Unless your house is such a mess that is not where to sit and eat, no clean clothes and barely space to walk, if you don't wash the dishes one day,if you eat frozen dinner one day, or if you don't do laundry for a week or longer, NOTHING HAPPENS, they don't remember Sep 12 2002 when you didn't the dishes, they don't remember if that week laundry wasn't done. But they will remember if lose your mind.
Perhaps a remedy is to schedule fun time and alone time.
In fun time make an afford to enjoy her (her laugh her silly self) and also have some alone time (where she would be in her room playing and you will cool down.
Your little one is going through a nice and annoying phase, they talk a lot, they don't make much sense, it doesn't help when they don't do the chores (that I still diling with at 12!!!). But it does get better, don't let your relationship with her get destroy for this age related things.
Wish you peace and calm.