ISAAC/OLD SCOTT.
Kira on the show isn't the Kira that you're friends with. The Kira you know, frankly, everyone, is allowed to make choices and have opinions that don't follow what's going on that show. If I followed the show, I wouldn't be married to Erica and have three wonderful little puppies. You're allowed to make different choices and be just as happy. And you're allowed to make different choices and be miserable, but what's important is that you're allowing people to make their own choices rather than forcing them to choose to follow what you think is right or what you think might make them happy.
If you don't want to push her toward Scott, don't. It's important you do what makes you happy. You don't need to punish yourself over what you think you might have done wrong with the anchoring because when it comes down to it, you did your job. You brought him back to life. The doors? That's a completely different situation and it isn't something you did wrong. Even if you had done something wrong, which you did not, you still deserve to be happy. And if Kira makes you happy and if she's happy with you, don't push her away. That's the last thing you should do.