I thought it was funny in one of the first interrogations with Flores she commented that she wasn't a murderer but if she were she would know enough to wear gloves. Then why didn't she? Was that one of the things she didn't think through until she was busted?
Maybe, yeah. Or maybe she did wear gloves and had to take them off when her fingers were cut.
The other thing she told them was he was shot first. And, then the girl ninja went after him with the knife.
Her fingerprints in that room would not be such a big deal. Neither would her blood.
But, her palm print in blood with her blood mixed with his blood is case closed.
Act of God, IMO.