Obviously, the worst decision Maud could have made was turning her back on Klaus to get naked. She is both shy and a bit turned on, even if she didn't want to admit it.
When Klaus merged with her during the planet's Awakening, she, in a way, gained access to all his memories. It was the same as when Klaus gained all her memories during their merge.
So she happened to know all the amazing nights Klaus had had with his wives. Even if at first she didn't want to know, spending two years possessing a body made it impossible for her not to become submerged in those memories.
So the mere fact that she and Klaus would probably be hugging each other in a narrow pool is just too stimulating if she sends her mind back to those memories.
This left her both shy and flustered.
However, turning her back on Klaus is even worse.
She first removes her overalls, which are large enough to hide what Klaus never expected.
