Maturity: good or bad?

"You don't make it to everything, but you make it to a lot of things and I love you for it."

This came from my almost 8yr old right after an out of the blue "thank you for making it to open house every year" as I was putting something on her shelf.

I was stunned and speechless.
1. Because of the utterly mature topic for an eight year old to randomly bring up
2. Because I didn't realize she noticed
3. Because my heart broke a little for her and for her brother that me going to a school open house was such a big deal

Tonight was my daughter's open house at school. Evenings are particularly difficult for me lately because my energy and stamina just get zapped so easily, but there was no question in my mind that I would go to open house. She's been working for months on a diorama and report on opossums that was going to be debuted tonight and her art work would be on display. Plus this is the night where she gets to really show me her world. I love open house night actually. Apparently though there was a question in her mind as to whether I would go. She's completely justified in thinking that too. That's the sad part for her really. She knows no different since I've been sick her whole life, but she is getting old enough now to understand that I'm not like "other moms".
So here we go again... "is this overly mature comment something good? Does it mean she will be a mature, empathetic adult? Or is it incredibly sad that an eight year old has to think this way? Is she being forced to grow up too fast?" Honestly I believe it is secret option F: all of the above.

But geberally I think "no no it's fine, they are happy, well adjusted kids who are just mature for their ages" and then I see stuff like this:

and I think "holy hell, I've destroyed my children".

I've said before and I'll say it again: the hardest part of all of this is the effect it has on my kids and my husband. My daughter is independant and mature beyond her years. Anyone who knows her knows this. There's no way to predict if this will be a good or bad thing in the end. It could just be a story to tell her therapist..... Fingers crossed!