Ruki will be taking a trip into the rift and thanks to her experience in there will likely not want to stick around for long...

My thought is basically focused on having IceDevimon stalking her and possibly other people in the Dreamscape. So that cold shiver down your spine? That might be him. The fun thing about this is it could be an overlap into someone else's dreamscape if people are interested in having a demonic digimon pop up the mess things up.

I've also given thought to other events that Ruki had to deal with from memory...but this is probably at the top of my list.