I found a bit of information on this subject, Source 1 says Diseases which result from a homeostatic imbalance include diabetes, dehydration, hypoglycemia, hyperglycemia, hypothermia or heatstroke
Source 2 says:
The consequence of an imbalance could have wide ranging ramifications running from diabetes to dehydration, high blood pressure, etc..
We have two viable options, Frequent thirst and urination would be reasonable, since dehydration is a main point in Homeostatic Disorder. Blurred vision and high blood pressure might apply because Homeostatic disorder causes diabetes, and hyperglycemia, which is a lot of sugar in the blood.
Decreased heart rate and memory loss don't really apply since memory loss isn't really a factor in homeostatic disorder. Hot, itchy skin and nausea seems exactly the opposite of what triggered her homeostatic disorder so I wouldn't go with that either.
I would go with either 1. Blurred vision and high blood pressure or 2. Frequent thirst and urination in that order.