When Palpatine absorbs the Dyad, Ben and Rey fall to the ground. This is the perfect opportunity to send Rey to King’s Cross Station. Heck, DotF did just that. This can be used to exposit absolutely anything, though preferably more cosmological elements. It can look like anything since it’s all in her head / the Force. Animation, rotoscoped live-action, shooting new footage with a 9 year old Rey, simple spheres of light, anything goes, really. Then she gets whatever message she needs to hear and wakes up on the ground and starts chanting for the Jedi to be with her.