There's a lot to cover, so let's start with the basics first.
Krypta will be gone from Promenade for two weeks, meaning there will be absolutely no trace of where she went. During her time away, her room and her mirror will reflect what's going on in her canon.
The first part of the first week there won't be much of a change. Things may move around a bit and switch places, and the mirror will show memories or spasms of things going on, but it's all a blur mostly. Her place of solace is still in the city too, with no hint as to what's going on. Towards the end of the week is when things get bad. Her room is literally going to be torn apart, her mirror gone black, and if characters venture to the bridge they'll find blood spatter all over the tracks and leading into the tunnel.
The second week things will start disappearing. Pictures of her and friends, her and Nick, her and her family- are placed into the trash bin or hidden/locked away and take a while to find. Her room goes to the bare necessities as she's in hiding and can't attract attention back home. Her place of solace is gone. Oh, and now that she's died and come back in canon, she's a lot more serious and mellow. Also trust issues out the wazoo. Even with friends. SHE LOVES YOU GUYS, REALLY. Just blame home for giving her a shitty time to go back to. )8
Seeing as her town has been entirely taken over by demons and made into the new Hell, she's had to essentially let go of everything she was. All her pranking, her laughing, her immaturity as a spoiled girl goes out the window. Abelloros is still paranoid of her coming back too, even after she's been killed. So she has to not only change her look, she also has to study the demonic language, write it, speak it, train herself to not only mask her aura but to also take on anyone who challenges her, as well as kill Nick. Krypta literally has to become the demon she was supposed to be three years prior in order to continue hiding.
To say it leaves her a bit different is an understatement.
But despite all the heartache, with some coaxing her old self will start to show again. It's going to take time though, because she's had to be on her own for almost two years. That doesn't leave her much of an option in trusting others. She wants to, and it nearly kills her any time she doesn't, but she's just been hurt by Nick's betrayal too hard to really ever open herself to others like that again.
In addition to having all this happen to her, she's gotten a lot more knowledgable about what she is and what she's become. It's not something that makes her happy, but if she can still fight back, then she'll use what she has to do it and get the job done.
With fully awakening her powers as a Spirit Holder, she also gains the true purpose and intent that they are needed for. Spirit Holders have two souls bonded to the host soul- one is a dominant weaker one, which is openly present, and the stronger yet quiet and hidden one, which awakens when Hell's call for an army/takeover came. From there, they possess both the host and the other spirit, and cause havoc and destruction in their wake. That is the whole purpose behind their creation: to be the secret heavy-hitters that sabotaged and infiltrated enemy lines. Because Krypta was dead at the time of the calling, her inner strong spirit never took over, and as a result she never learned about it. This makes her unaware that the more she buries within herself the stronger her inner demon becomes. That inner being ends up calling itself by the name of Pseudo. For more info on Pseudo as a whole and what she can do, go
here.
TL;DR Krypta will be gone for two weeks, her room, mirror, and place of solace will reflect bad stuff happening back home, before she comes back from going forward in canon almost two years. YAY SUMMARY DONE orz.