This is a really difficult behavior to curtail--I've tried and failed with one of my parents' cats. However, I do think that with persistence you could make it work. You might want to invest in some ear plugs in the meantime
I don't think anything is wrong with the cat. She is undergoing two HUGE changes at once (being kept indoors and moving houses), and she is stressed out.
This is just my own sense, but I'm not sure that taking her out for walks is a good idea, at least initially; I think that giving her just a taste of freedom is probably just making her want it even more. Instead, I would focus on making the indoors as interesting as possible. She is used to having trees to climb, animals to chase, grass to roll in... you get the idea. So play with her, offer her treats, get her some new toys, etc. Most importantly, COMPLETELY IGNORE her when she yowls at the door. Reward her with lots of love and playtime when she's being quiet, but don't reward the bad behavior with any sort of attention (good or bad). I think that she will probably mellow out after a couple weeks of this.
Good for you, by the way, for doing what is safest for her and keeping her inside. I definitely think that's a wise decision