It will take time, anonymous, but have patience. Evolution is always jarring to a pokémon, even if it was both planned and wanted from the outset. Give her plenty of space (no pun intended) to adjust, but be very supportive and sympathetic throughout this period of her life. Reassure her that although she outgrew her old spaces, you’re still a solid, familiar presence she can count on.
That having been said, stick to schedule and routine as much as possible to establish a sense of normality for her. If you always feed, walk, train, or so forth with her at a specific time, continue to do so. At the same time, construct new spaces that she can find comfortable: something large enough to accommodate her form, lined with something soft that will withstand the sharpness of her rocks. During training, focus mostly on physical tasks to help her understand her limits better and thus adapt a bit easier to her lycanroc self.
In short, through a combination of your support, grounding from routine, and training, post-evolution adaptation should be a little less traumatic for her than it has been. However, I can’t emphasize enough that it will take a lot of time and patience, so don’t be surprised if it takes a bit of time before she seems comfortable.
Best of luck, anonymous!