Apologies if I misunderstood your comment but to put it frankly, yes she is messed up in her own way because what normal person tries to isolate the one they love?
As for the “ thing she cared about is what was in front of her” part, considering the fact the original one only appears when “Lucia” is asleep and the reincarnated one was unaware of the original one’s schemes, I believe it’s safe to assume they don’t share memories from when the other one is awake. but because the reincarnated one tells her everything she knows what went on while she was unconscious but not the other way around. Therefore the only one who was technically in front of the original Lucia all this time was no other than the reincarnator because her only interactions with other characters we see were through the form of letters
The way I understood it, it’s the twisted way the player character of any dating sim operates. The player character of a dating sim often throws themself at the love target in any way that appeals to them, often in an unhealthy self-sacrificial way. For the OG!Lucia, that was her fate; whoever she would be set to pursue, whatever Love Target was placed in front of her, her personality would mold around them.
However, the one placed in front of her this time is Isekai!Lucia. A somewhat-copy of herself. So her personality twists into some sort of self-love alongside a pursuing love. She uses Isekai!Lucia to break free from the Otome plot while also isolating her so that they end up “together”. Because OG!Lucia and Isekai!Lucia cannot physically exist in the same space in real life (not to mention Isekai!Lucia mever lets her out during ‘game time’ because she’s so self-absorbed), OG!Lucia’s personality is not beholden to appealing to anybody. That’s why she says at that end that she’s finally “me” and refuses to give up her character-agency to anyone else ever again.
Isekai!Lucia’s mental is too weakened and broken now from the shattered confidence to take control anymore. So OG!Lucia is finally free and happy.
Love the original Lucia for doing that, but i still don't understand, is she also messed up? Cuz the thing she cared about is what was in front of her, in the original one, the one in front of her is all the Male leads so make sense they got the reverse harem or just with one of the ml, meanwhile in the now version since she is always with the reincarnator Lucia means she always sees her also means she is the only one she cared about which LED to this? Or am i Wrong don't quite get it tbh