At such a young age, I'd say either x-pen or crate (I'm afraid of squishing my little ones on the bed and then afraid they'll kill themselves if they try to jump off).
If you plan to keep her permanently on your bed from now on, then you can try that out. But regardless, I think it's better and easier for everyone if you
set a schedule, whether on the bed, in the crate, on in x-pen.
My personal preference is crate training. If done right (the right size, with proper training), this IMO is the best. It's super beneficial in the long run (i.e. when you need to crate your dog if you have guests over, or when you travel, etc).
At night, start by taking her out every 3 hours. If she hasn't soiled her crate for a few nights, extend it by half an hour to every 3.5 hours. And so on...basically until you can sleep through the night (this can take a couple months to many months - you just need to be very persistent and patient!

). And of course, you need to withhold water after a certain hour (I do 8pm) to be consistent. IF you notice accidents, that means you have to go back to more frequent potty breaks.
As long as you're taking her out on a schedule, you shouldn't worry about accidents, so you can ignore the cries (as long as she's not freaking out in the crate). If it's just minor whimpering, you can try to cover the crate with a blanket (try varying degrees of coverage to see what works) or put a loud clicking alarm clock nearby or a piece of your old clothing with your scent. Though...with the crate, it's
very important to invest in some time to "introduce the crate" and make sure she learns to like the crate and is comfortable in it.
The Dog Trainer : How to Teach Your Dog to Love His Crate :: Quick and Dirty Tips ? https://positively.com/dog-behavior/...joy-the-crate/
It's a pain. But I see you said you don't mind getting up. At such a young age, when they gotta go, they gotta go. They don't even know they gotta go, and they'll just go

. And she's literally a baby - definitely hasn't been trained to "let you know" yet. A schedule will help with their internal pee clock. You'll be surprised at how quickly they catch on!