Sorry to hear of your sad loss Myr, 67 is no age, and as I sat reading your blog entry it took my back to my own mother's death in 2006, I was 24. Its very hard to lose a parent when you are relatively young. My mother just like your father died pretty quick, except mine died of a brain hemorrhage and not a heart attack. Also like you, the last words we said to each other was "I love you" because for my mum, it was her 41st birthday celebration. I waited until she went to bed and left her and my step dad's house by Taxi with my partner. Basically between then and the morning a blood vessel burst in her head and she never woke up again.
Your sad event brings home so many memories and although each situation is different, I truly know how you feel at this moment.
Much love and Hugz. Look after yourself and be strong for your mum.
Matt