I feel like there is a wedge between my daughter and I

We live with my ex-partner's sister and her husband. We have been there for five years now. They are Hispanic and talk to my daughter in their language. Sometimes they overstep their balance between aunt and uncle and reach into my role as a parent. They neglect to see this. I do, and it reflects in my child's behavior. She sees them as stable but is upset that her dad isn't here, and my intuition tells me she blames me to a degree because she doesn't know about his alcohol addictions.