My mother suffers from Polimyalgia Rheumatica, Osteoporosis, Hypertension and a heart murmur?

I am a caregiver to my 85 year old mother who suffers from Polimyalgia Rheumatica, Osteoporosis, Hypertension and a heart murmur. My question is dealing with her blood pressure. She is taking all the medications prescribed (Amlodipine, Losartan, Hydralazine, Isosorbide) routinely throughout the day and her pressure seems to be okay. In the evening though she starts to get this feeling that she has to vomit and she feels terrible. I took her blood pressure during this time and it was 188/92. She doesn’t eat anything at this time of night and I monitor/restrict any sodium intake throughout the day. Is there something that could be causing this that I could try at my end to resolve these “episodes”? Thank you in advance for your reply. Sincerely, (—)

Age: 61
Male
Medications: