I'd leave her in the tub she's in now rather than move her back and forth to a tub to soak in; that would stress her out immensely and with the temps you have in her current tub, she'd be fine to soak in her water bowl if she chooses to rather than being moved and then tossed in a tub of water. Let her digest and decompress a little and then you can start trying to get her squared away more than what she is right now. Being patient can suck but that's the best thing you can do for her right now; warm enclosure with hide(s), access to water and leave her alone until she passes her current meal and that lump, hopefully sooner rather than later. I know you mean well but the best thing you could do is keep an eye on her but otherwise leave her alone and give her a chance to relax without adding additional stress. Good luck with her and glad she ate for ya'!