I dunno, when I was in the theater in 2015 and I heard him say “What girl?” I genuinely thought that was supposed to be a hint that he was familiar enough with some girl that could have done this. There are countless others on the internet that felt the same way. Clearly Colin Trevorrow thought the same thing. Remember, this reveal we’re crafting is meant to tie together the entire trilogy and make it feel like this was planned out all along. The fact that we already are emphasizing how linked they always were through the Force means it would be a shame not to take this opportunity. We don’t have the luxury of creating our own supplementary material here.
Take a look at my last post. As hiventon pointed out, 9 times out of 10 Rey’s father would think her mother cheated on him in circumstances like this. There really isn’t any room for fear to be involved. Not unless her mother was barren, which isn’t worth stating to make the fear angle work because that would actually make Rey a positive thing and something to celebrate for 90% of couples. I think what I’ve got there is a short enough blurb to explain why a couple would sell their own child. And after that, they aren’t mentioned again, as they shouldn’t be.
For you, a well-versed fan in the lore, the direct reference to Vader immediately spells that part of her birth out too much. For others who don’t know as much, I think it’s a sufficient and more relevant hint. Remember, the only thing that is confirmed to fans who understand the lore is that Rey is a birth just like Anakin. That just means she’s practically another chosen one, which should be a good thing! Palpatine’s part in all that hasn’t been revealed yet. Perhaps this is the reason the newest part about her birth coinciding with Palpatine’s return should be removed so we save that for the actual reveal.