Well,
@JustBabyMargo and anyone else who is interested...
I got my girl off the porch today and held her and cuddled her for a while. Then she got a haircut, which I'm not sure I did a great job with because my hands were shaking and I was afraid of cutting the wrong feathers, and then she got some more blukote. My dad put her in the coop with the others while I opened their door for them to go out into the run. I figured if there was a lot going on at once, they wouldn't be so focused on her. I also gave them a little treat of blueberries and romaine lettuce to distract them a little bit.
We sat and watched her for about an hour in the run. She held her own pretty well. A few of them came up and put their faces really close to her bald spot and backed off, and a couple did peck, but they quit once they tasted the blukote. The white rock that was bothering her before did peck her several times once when she laid down in the sun, but I shooed her away, and she hasn't tried again since. I did notice there's one little spot under her wing that I missed with the blukote, but you can only see it when she spreads them out, so if I need to, I'll grab her tonight and fix that.I'll be going out and checking on her every other hour today. She just seems so happy to be reunited with other chickens and to be outside.
Otherwise, she seems to be doing okay. She hasn't been outside much in her life, and she's really enjoying hanging out in the sun. She even tried to start a little fight with one of the other hens.

She pushes her way right into the middle of a group too. I have noticed she lays down a lot and she's not really steady on her feet, but she hasn't had a lot of exercise over the last few weeks because she's been hiding in corners, so I'm just going to keep an eye on her and intervene again if necessary. I may also scramble them some eggs for extra protein. I'm just so thankful they've pretty much accepted her back with no major issues. I've had such bad experiences reintroducing chickens back into the flock in the past! That's such a relief. And if I do end up having to remove her again in the days ahead, I probably will do a Polish-only coop/run. Thanks for all of your help!