Well I would say the refusal to pee or poo in her pull up is a good thing
I wish DD would do that
It could be she's finding herself feeling the need to go at night and thats why she wakes to go potty. I know I wake up at night and have to go quiet often. If she's wanting a drink before bed (also a normal thing as far as I know) that would lead to the need to go at night. Congrats may be in order, she may actually be telling you she's ready for night training.
Its hard when she has to be in the same room, I can see that adding to the situation right now. If you give her what she want, ie to go potty does she go back to sleep?
As for drinking at night my DD used to need that ALL the time, she's since grown out of it, but when she was doing it all we did was put a sippy of water in the bed with her, then when she woke she would drink and go back to sleep. I still find myself leaving one in there, usually she'll drink it in the AM.
As for sleeping in mommy and daddy's bed. Thats a tough one. Its one you and your DH have to deside is or isn't worth the fight. If you don't want it, you will have to stick to your gus as it were.
DD for example went through a faze after she was sick where she wanted to sleep in mommy's bed. While she was sick I let her, partly cause it was easier, partly cause she was sick. When she was better we then set about putting her back into her bed. DH was off midnights at this point so beside it being a situation we didn't want, we also didn't have the room. It took a few nights, and some screaming on her part, tears on mine, but she successfully transitioned back into her own bed.
The only difference here was that DD does have her own room, but she knows how to open the door and can easily come to ours.
With her being in your room the task will be harder. She's usuing this as a means of attention seeking aswell. IE she calms untill you go. You may need to try a modified version of gradual withdrawl. Spend a few nights by herside till she sleeps, and then slowly move away untill you are once again in your bed and she in hers.
I'm not saying it'll be easy or fast, but you can get there. And you wont have to force her to stay in bed. Just gently lay her back down when she gets up, like with PU/PD, just only the PD part.
hth