Aw bless you. Your dd is stronger than you think. She will never blame you, so you must stop blaming yourself for something you couldn't control.
My dd had the horrible experience of seeing me wired and tubed up in hospital twice before she was 8 years old. Both of mine were ectopic. She's fine, really fine. She was obviously upset by it, at the time, but she is a strong kid, with plenty of love and support and I'm sure your dd is the same.
I won't say those memories go away, because they don't. They are still as vivid now as they were then, but they do get less painful.
I keep typing something and deleting it, because it sounds so rubbish and might make you think , but I'll tell you anyway now I've explained my launacy!
When my dad died on Christmas Eve a long time ago, we sprinkled salt on the door step and brushed it all away with the old year. It was kinda symbolic to us, to brush away all the hurt and sadness of that year and almost cleanse our house from feeling so sad. Perhaps you could do a similar thing. Ignore me, I'm rambling and wishing I could take your pain away. You will get through it, but you need to tell someone. I bet most of your friends do remember what happened, but haven't mentioned it, for fear of upsetting you. Folk are odd like that. Unless you've been there, you just don't know what to say for the best.