Dear CrazyLady,
I did a LOOOOT of therapy over the years, that helped, leaned on my friends, let myself feel whatever i wanted to feel… sadness, anger, nostalgia… but also happiness and allow myself to be happy again without him.
No, i don't think you are crazy, we all cope with grieving in different was and as long as you don't hurt yourself or others i think everything goes.
Maybe you can donate does gifts so Salvation Army or a women's shelter, in her name, to honor her

.
She is still here, I do believe that. I think theres a part of her in your heart that will never die, all the things you shared and how you grew together, so she is part of you, she can still make you strong, you just need to find her in your heart.
Its not your fault, she made a decision. Im sorry you were put in that position cuz its not fair, we are not responsible for anyones life but ours. Its different, knowing that someone is thinking about it and knowing they are making that step, please don't be so hard no yourself, you are a young woman, you can't carry that burden, not then and not now.
Hope you have a good day.
PixieArmy