Being a non-ethnically Jewish adopted child of Jews is weird. Technically you are a convert, but technically you aren’t. You’re declared to be Jewish. The only “conversion” you go through are the Bet Din, the mikveh, and sometimes (for people born with penises) a bris. And that’s all depending on if you are adopted by a religious family and if so, what denomination they are. You don’t go through any of the other parts of conversion.
And you’re raised the same as any other Jewish person who is a Jew from birth, so you don’t feel like a convert. You don’t feel any different than any of the other kids at Hebrew school, singing Ein Keloheinu or learning your haftorah portion. Your parents don’t treat you as anything but their child. Their Jewish child, whom they happened to have adopted.
And when you get older, and if you are open that you are an adoptee you get things like “well, you’re not a REAL jew” thrown at you. So you start to think that maybe you have to choose between these two integral parts of your identity: Jew or Adopted. Because outsiders think they’re mutually exclusive.
And you don’t talk to your parents about it, because you don’t want to hurt them. You may not understand why people say these things to you, but you KNOW that your parents will be hurt. So you just bury it down and just laugh when someone says something antisemitic and follows it up by saying that it’s okay because you aren’t REALLY Jewish. The follow up that’s never verbalized, but you hear anyway is: “because you’re adopted.” Because you can’t be both.
My two older sisters converted when my mom converted to Orthodoxy (her previous reformed conversion was deemed not kosher and because Orthodox law only accepts matrilineal Jews, my older sisters had to convert as well). They were seven and three at the time and even before that, they were being raised Jewish, if not observant. One of them is actually currently in the process of adopting a baby with her husband, so I wonder if maybe her own strange status as a convert (and whether or not she is a convert varies on who you ask) will enable her to help her child with this.
I think it definitely will. Even if you’re the most empathetic parent, having shared struggles and experiences with your child is just different than merely being empathetic and understanding of your child’s struggles. And that’s not to say that if your sister had not had to go through a conversion to be accepted into Orthodoxy that she would not be able to sympathize or parent her child as well. My mother and father are amazing parents (although not without their faults, but who is), but there are just some things that I have to explain to them about my life experience merely due to them not being adoptees that I would most likely not have to explain if they were adoptees because they have no basis for comparison. Although, similarly, they have to explain what it was like growing up Jewish in America in the 40s-60s, because I grew up in the 80-90s and I have no basis for comparison.