I understand why she's nervous another heroine potentially another Hartknight, would it ruin her image to lose 2 fiances? probably and this one would suck even more since she actually loves prince aqua but I still think she should have more confidence, if Akari can lose in the end so can this girl.
I think i have a trust issue as well.
Sort of understand the unsettled feelings from tiara.
I mean... Idk... Coz it will hurt so much if prince aqua really choose lady aishira in the end.
Her ex fiance did end up with akari.
I'd rather she be free from all of these.
I kinda hope author subverts the whole "new rival" thing, and instead had this heroine someone reincarnated that doesn't care for the capture targets. Like rei taylor she might favour the villainess, or as the one that prefers the knight captain she might like a mob char, or maybe she prefers a capture target from another game (attack on heart-knight)
Let's not forget that the info she got about this game is all second hand from someone that just sort of miraculously stopped hating her. What if the wrong name was given on purpose, and this is someone else from the game? Maybe Aqua was supposed to be alone returning to see her and asked her to be his fiancé which then made her the rival not the heroine. Maybe it's actually the heroine's friend? The original protag might be trying to split them up still.