Sudden panic about my estranged family and my baby.

Not sure if estranged is the right word, but when I was a toddler my biological mother packed up and moved across the country to live with her parents and supposedly get help with her alcohol addiction. Long story short her contact was about once every 5 years, and a couple birthday cards here or there throughout my childhood, along with lots of empty promises about recovery and reuniting. As an adult we now have absolutely no relationship and my last message to her ended with "do not contact me again" so, it didn't go well.I was just thinking about when my daughter's old enough to understand that her grandma is actually my step-mom and that I don't have a relationship with her biological grandmother, or that side of my family at all. I don't plan to hide this information from her so she'll be fully aware of this as she grows up. I'm just concerned about that side of the family reaching out to my daughter in the future considering they're strangers to me and I don't have an interest in reconciliation with any of them.I'm also trying to come to terms with the possibility that my daughter may want to get to know my biological mom or people on that side of the family even though it would hurt me immensely. I don't want to stop my daughter from meeting this side of the family- as an adult if she chooses too, but, especially meeting my biological mom would be painful for me.I'm not even sure what I'm trying to ask here, just for advice about this situation in general. If anyone has experience being in mine or my daughters' position I'd love to know how you felt/what you did. Even if you don't have any experience with this, maybe how you think you'd react could help me. I thought about blocking the few people I'm online friends with from that side of the family, because I don't have any sort of relationship with them, they're just sort of there. But I don't want to be irrational about this. Technically they've done nothing wrong, they're just strangers to me. via /r/Parenting https://ift.tt/32xYHgL