I was really wondering this too. I feel the same way when the FMC's gets treated differently than their siblings. The whole time I was reading this I was hoping she was getting treated well but not receiving special treatment. She is a kid but so are her siblings and, I don't think this relates to this story but It really aggravates me when a MC who reincarnated into a child is treated better than their siblings who are actually children. She can be raised right without being worshiped by everyone.
There isn't many chapters yet and I'm not sure how much you've read but it seems like he does treat them equally. Like when his sons treat her poorly because she's different he doesn't get mad or punish them he simply tells them he understands their feelings. Though she is being raised differently, but I think it is simply because she is a different (since she's a small defenseless bird and not an aggressive snake) instead of it being her getting special treatment. Overall, from what I've seen so far he seems to love all his children equally and gives them the same level of affection and care.

Can someone tell me if the father treats all children equally ?? I really FUCKINT hate when the daughters take the special treatment meanwhile the others just get a cold father