so even through the pirate twins are bitches who tried to kill you and even threatened you and betrayed you you'd trust them while Brenda did none of that and actually is trusting you enough where doesn't just kill two women who have killed hundreds of innocent people and literally betrayed their own family and basically city? yeah no they aren't trustworthy at all and one still trusted her dad after years of abuse and trying to kill her sister and even she tried to kill her sister like literally if she's willing to kill family she's willing to kill anyone
I mean each to their own you are entitled to your own opinion. I just find it hard to believe Peral or Kira killed hundreds of innocent people unless their father literally forced them. As they make it a point to go out of their way to only go after smugglers , slavers and go against their father's wishes and how he would do things when he is around.
Also when did they try to kill us? As far as I recall Kira only went as far as threaten us the first time and Peral just took the chalice. Peral did fight against Kira but never against the MC as far as I can remember. Also I doubt Peral was trying to kill Kira more like disarm her. However I wouldn't say they trusted their father more like they were afraid of him. So they made illogical decisions at times like Peral attacking Kira
Brenda how over attempted to take over Looters Bay , from the sounds of things used to be good friends with the twins if I recall correctly. Not to mention from the little bit ive seen of her I believe she is ruthless and is just as bad as one of the higher ranking pirates that worked directly under the father. To me she seems just to damn risky to let live , as I think if she see's a chance to betray the twins or the MC she will take it.
While the twins are extremely loyal to the MC. Peral's loyalty comes from her guilt of what she did and she wants to atone for her mistake ( tho imo I don't think she needs to feel guilty, as it is understandable why she did what she did and her sister forgave her) Kira's loyalty well that just cause she madly head over heels in love with the MC. to me Kira seems like she doesn't have a balance personality she either loves you or hates your guts and her slider is maxed out for said direction. I just don't see them betraying the MC of their own choosing. I could be wrong but that is my personal opinion.