Dude now you make me questioning everything
For the last question, i think it's already explained that the curse is actually for royal bloodline, so diego the crown prince should be the one who got the curse, but they moved the curse to alejandro, at least that's the reason why alejandro got cursed, to replace diego... But the nature of the curse is probably still questionable i think it was mentioned that the curse is originally from elenora's kingdom to diego's kingdom, but i don't really understand
In terms of isolation, I would say yes she is sort of isolated but that's probably because she doesn't really know anyone and she helps out Alejandro alot who is shunned by the people in the manor. This becomes worse when Alejandro is cured and obviously favors her which causes a bigger rift between her and the other maids.
In terms of going out, she may not actually have a reason to unless requested since she lives on the manor and is provided for there. She doesn't know of anyone to visit outside anyway.
She doesn't have any memory and no one else on the Manor seems to know about Ibelina so she doesn't know if she has family. If she does they probably never tried to contact her, so most of us assumed she was an orphan, I think this was mentioned in the webtoon, maybe not. Even if she does I understand her not being curious enough to find them. Imagine having to find and meet a family knowing that you're not their real daughter, it would just be awkward and cause complications. And her only concern really was Alejandro.
Other than Alejandro being cursed as a replacement for diego we haven't gotten many details into the nature of the curse at this point of the webtoon unless you want to read the spoilers
I have so many questions, does Ibelina not miss her family or at least the people she knew from the real world? 'Cause when she first transmigrated, she was just like, hey is this a dream or something? And then after she confirmed that it wasn't, she just kinda accepted it. I mean, isn't that just too quick?
In chapter 18, when she mentioned that she had a higher paid salary than the other maids, due to her caring for the young master, does she ever spend it on anything? Does this ever change in later chapters? I'm still a relatively new reader, so I haven't gotten too far in the story yet, and MAYBE this will change.
On another hand, Ibelina just seems a little too isolated from other people, especially her co-workers, the other maids. Also, so far, she hasn't left the manor at all, maybe it's part of her contract?
But that makes me wonder why her family in this new world hasn't contacted her yet. Perhaps she's an orphan? However, these speculations leave me nowhere, and I wish there was at least some explanation, maybe it's just brushed off because she was just a "side character" in the original?
One last question is just of the nature of Alejandro's curse, like what's the reason behind him being cursed? Plot convenience or just more plot convenience?
So many maybe's it's making my head spin...