Thanks everyone for the replies! She's now sitting in her cold hide (the rock) now that it is daytime,
I haven't moved anything yet and just plan to buy another rock-like cave for the warm side and remove the log since she partakes no interest in it. May just remove it completely until I have the new hide.
She only seems to like to be near the top during the night time though which I still find weird. For my thermometer btw it's one of those hand-held instant ones that take the temperature immediately (thermometer gun?).