What is, what was...

Reaching out for memories,
I sink into my mind, but find only pain
Curtains part, inside my head
Happy times lie hidden deep
Among life’s ruins,
Ravaged by the recent past
Death comes, also to those who seek it
I’m sure I did not see it coming
Didn’t you know there were other answers?
Is life better where you are now? Simpler?
Or, could it be,
That you regret a move you can’t undo?
Lobsters, no crabs, we chased and quartered
Only when I wasn’t chaperoning the two of you
But, you can’t hold that against me
Occasionally, that’s what big sisters do