Warsaw Uprising - Researching a female participant

Good evening,
My relative participated in the Warsaw uprising and I'm trying to find out more about her story.

She was 19 at the time, and my theory is that she was captured and spent some time in a POW before being liberated.
The chances are she went into Stalag VI-C but I have no way to verify.

I managed to find this:
1944.pl/powstancze-biogramy/maria-cubrzynska,6587.html
Which is her name and appears to be a rare name (no risk of misidentification).
I'm not sure what can be done with the POW number, but hopefully it gets me closer.

Can anyone suggest where I can go to search for this person specifically?
Thanks in advance for you time.

Try this German archive site
arolsen-archives.org/en/

If quick search doesn`t help, you need to send them a formal request for information.