My mom went back into the hospital on Wednesday the 21st. From what I can tell she's still having dehydration problems, and this time it caused her to be dizzy and have problems with her equilibrium. She's doing better now, although she sounded a bit tired when I spoke with her earlier this evening.
Mom said her hands and feet were very sensitive to touch, which has been the case with her current chemo medication. Her oncologist stopped chemo for now, and I'm presuming that's to help my mom's system settle down so that she can retain fluids.
Several months ago, one of the scans my mom had showed a small spot in her kidney. They did more scans this week and the spot hasn't changed, so that's a good sign.