They really tightened the security around her, by the looks of it. Fancy Hat McPants was able to loiter around her while she was asleep and even hand over a big box to her. The box is big enough to have a few demonic poisonous snakes or ten demonic giant scorpions in it. Where exactly is that security, huh? As expected, she needs to take care of herself.
I already said it before, but it would be about the time for her to realise she has been using spatial magic from the very beginning. The first spell she used was dimensional storage ("item box", as she called it). That's bloody spatial magic. Just extrapolate from that toward teleportation and even dimensional travelling. I don't know if Reene is stupid not to realise that or if the mangaka is the stupid one, haha. If it's the latter, things aren't looking good for Reene. It's hard for a character to fight against the author. Even impossible, some would say.