I got a cat and I was worried but...

So I rescued a cat and I was super worried about her because she didn't want to come out from under the couch. I wouldn't see her eat or drink or use the litter at all. the second I go to bed and turn the lights off and leave her by herself all I hear is her little self scooting around my place playing with her toys I got her. at one point she was even on my bed and woke me up. the second I woke up she scooted out haha. she was also on my dresser at one point looking out of the window. she's actually so funny. curious about us but still a little to anxious to play and hang out when we are up. She drank and ate and used the litter while I was asleep. not so worried about her anymore!