Tried SLKR vs SLKR and both team members were impossible to beat forever. See the attached image. Note that the defending team had new DC level 15 for Night vision Rey. Other counters did not work ...
Ideas
I know her abilities. She should not be untargetable forever, only for one turn or so.
So with this DC it's a sort of infinite loop we had in the game before.
Unless you're 100% certain every member of your team had taken at least one turn, Rey can't be targeted and allies can't be defeated.