I would also suggest the brainhospice website, because it will describe a lot of common symptoms. My husband has been showing most if not all of those for 4.5 months now so I would not necessarily freak if she starts showing some of the symptoms. The timetable is not true at all for my husband. I would also read the stories on the website. They also illustrate how different each individual is.
Our doctor said often it will be a peaceful and relatively painless death if the patient goes into a coma which often happens. However some of the brainhospice stories show how that is not necessarily going to happen.
I found a little comfort actually talking through scenarios with our hospice nurse. I am to call them if I become concerned, and they will come out day or night. I have heavy duty medications on hand if he should have a lot of pain or distress.
Lately I have been listening to a lot of rough irregular breathing overnight (it's hard to sleep). This has been going on for a month. But I find if I give him oxygen his breathing settles down. He has been diagnosed with sleep apnea long ago, so maybe that's all it is.
I wish you the best.