Aww hun, i agree with the ticking clock, might remind her of mummy's heart beat and sooth her a bit, if she's climbing things when she is outside can you maybe buy or make a scratching post?
My dad made one by nailing together some bits of food (different levels making platforms) that had been covered with carpet, he hangs a bell off 1 platform and a little kitty ball off the other.
Maybe she is an early riser and just wants more entertainment?