My husband’s six-year-old daughter from previous marriage has not accepted me even after one year of marriage. Any tips to make her open up to me?

I was on same exact shoe. I calmly says to my step daughter that I am not to replace her mommy, she doesnt need to accept me nor reject me but she needs to respect me as I am her dad’s wife now. I didnt expect much from her and just be friends. It’s a struggle and needs a lot of patience because it a process, but you can do it, just prepare your heart for many more feeling of rejection. Don’t try to stop her so hard or give instruction yet. Try to know her first, let her introduce who she is without judgement, and from that,you adjust where she is and you both go to the direction of where you want your relationship be best at. My stepdaughter and I started to become friends and as the days goes by she started trusting me that I’m a friend and she opens herself up to me little by little. We’re like bff’s now she is already 10yo she was 6 when she lived with us. You are not replacement of her mommy, but you are an additional mommy :)