More poetry

So, a little background info... My mother was recently diagnosed with Alzheimer's disease. We all try to help her as best we can, but she spends most of her time being fretful and forgetful and scared. The same thing happened to my paternal grandmother. Basically, I've seen a lot more of this disease than I would have liked.
Anyway, if you can't guess what this poem is about after that...

Swiftly, swiftly comes November
How much then will I remember?

The faintest glimpse of dream-like past?
Even that may not long last.
All too soon doth mem'ry fade,
Leaves in its wake unknowing's shade.

Swiftly, swiftly comes November
How much then will I remember?

Spring lies in me, pure and sweet,
But soon shall pass in passing fleet
Summer draws with each day nigh,
And after fall, and then I die.

But death itself I do not dread,
For Heaven's gate lies soft ahead.
Nay, 'tis fall that chills my very soul - -
The rending of a mind once whole.

Swiftly, swiftly comes November
How much then will I remember?

Two matriarchs, both wise and staid,
Have slipped 'neath that unknowing's shade
Must I follow where they led?
Oh, that I were rather dead!

But swiftly, swiftly comes November,
And how much then will I remember?