Thank you for your query,
If pain level is high and lasts more that one week, then is very probably that is not correlated to HBP, but rather associated with cervicovertebral pathology. In such cases she need imagistic investigation MRI, CT scan
consultation. ( I know it is expensive) but those testes need to be done for definitely diagnosis and treatment. Also, she must continue medication for HBP and follow strict diet, I am sure she know that must reduce salt intake, avoid coffee, black tea, smoking
I wish her speedy recovery.