No, bc this is bothering me too. Does she genuinely think children are like, predetermined by order of birth? So in her mind, her first child will always be "Keith"? In a way, it's kind of tragic if you think about it-- she's working so hard to have a future where Keith is safe, but... he's well and truly gone, now. And since infants don't really have recognizable personalities, unless her first child this time around looks different, (either in hair color or gender) she'll probably never mourn Keith. But on a genetic level, he'll never exist again.
Kinda fucked up
Well it's not her fault time got rewinded, it's not intentional and she's trying to protect her future child so she's trying to settle things with her cousin before trying to get conceived again. We won't know how this will go (depends on author) but you're right about genetic/soul level that the same infant might not be the same again, it's totally not her fault though..
Yeah yeah, 100% it's not her fault! It's just that on some level I feel sorry for her because although she IS taking the right steps to protect her future child, that child will not be the "Keith" she keeps thinking about – so I wonder when, if ever, she will mourn having lost the original Keith (not necessarily bc he died, since we don't have any way of knowing what happened to him in the og timeline, but because she won't get to meet him again this time around)

Delaying the first night didn’t really make sense when she seems to want the same child as her first life. It not like you can’t study or do all the things she been doing if she was pregnant. Because wouldn’t it be a different child now. Maybe it’s some magical stuff behind it. I’m most likely thinking too hard about this lol.