Adoption and lack of support

Hi ladies so i adopted my stepdaughter . I am her ONLY mother and my husband struggles with addiction so sometimes i am her only parent. She is 2 so she dosnt know our family is different. All my coworkers and acquaintances dont even know i adopted . My kid is my kid .

Anyways i have a family member who INSISTS On calling her “your husbands kid” or step kid

Am i being sensitive? THIS SHIT PISSES ME OFF. Of course one day i want her to know how i ended up being her mom. But is step parent adoption really that different from regular adoption? I feel this family member is over stepping. She constantly is making my daughter sound like a non family member and making me sounds stupid for raising HIS kid. But i married them both and i wouldn’t trade my daughter or my husband for anyone. Whatever happened to not all families look the same?

Fast forward 2 years later we finally have enough money to try fertility treatments for me ! Yay! I am concerned my daughter will start to feel like a outsider if i allow these comments to continue, especially with a new baby!

My husband and i hd a son named tèvian who passed away when i was 32 weeks pregnant and went into early labor , sometimes this family member makes me feel like im pretending my daughter is replacing the son i lost. She said its not natural that i could welcome a child thats not mine so openly . But to be honest i have always wanted to adopt Atleast once! And raising her makes me want to adopt again... idk who to adress the fact that my family dosnt except my child.

I want to have a big family blended with biological and adopted but i dont want that is o b a thing! I love my kid and i cant imagine DNA making a difference to me! What do i do?