My daughter was born through donor sperm IUI, and my husband and his extended family all adore her and have never expressed the slightest suggestion that she's not part of the family. (Very much the opposite - every time my MIL shares pictures of her on FB, there are people in her comments who say how much she looks like her grandmother or her cousin, with whom she shares exactly zero genes. My husband is trans and we find this screamingly hilarious.)