Hi there. I'm here to try to help my 82yo Mum, who has had angina for a few years. Because she has suffered disabling migraine headache throughout her life, she has been too scared to ever use her GTN spray. When she gets breathless walking, or on steps, she just waits for the feeling too pass. My question is, does her approach put her at extra risk, say, of a heart attack, or is it ok to continue this way? Thanks for any advice.