I also know how you are feeling my parents where my best friends,my mom passed 5 years ago it was hard we knew she was gonna pass she had been ill for 3 years it was hard but it does take time ,my father passed 3 years ago that was really hard to get over it happened without notice he was in a car accident the hospital did a cat scan and said he was fine so he came to my house so i could take care of him he passed at my house 12 hours after the car accident in my bedroom on my bed he had a slow bleed on his brain he went in my room to lay down and never woke up . i blamed my self for a long time wondering what if but the doctor told me that no matter what i would have done he would still have passed.he was fine all day just a little sore but that was all that was wrong with him .