In Coelho's The Alchemist, why does the lake cry?

In Coelho's
, the lake cries when Narcissus slips while admiring his beauty on the
surface of the lake, and he drowns. The lake's tears are not so much for the sake of Narcissus
(who was wholly infatuated with his own looks) as they are for the lake's sake. For oddly enough
(and title="irony">ironically), the lake is just as
narcissistic as Narcissus was. While he wanted to look upon his own beauty,
it was in his eyes that the lake was able to see her beauty:

€¦when Narcissus died, the goddesses of the forest appeared and
found the lake, which had been fresh water, transformed into a lake of salty tears.

Why do you weep? the goddesses asked.

I weep for Narcissus, the
lake replied. [€¦] I weep for Narcissus, but I never noticed that Narcissus was beautiful.
۬I weep because, each time he knelt beside my banks, I could see, in the depths of his eyes,
my own beauty reflected.

The goddesses are certain that
the lake weeps for the loss of Narcissus because he was so handsome. The lake (personified in
the story) never noticed that Narcissus was handsome, anymore than he
noticed that the lake was beautiful. The lake surprises the goddesses by admitting she was
enamored of her own beauty reflected in his eyes, and we can infer her tears are falling because
she will never again see her own beauty. The lake is actually crying for
herself, for her own loss to see herself, and not for the lost Narcissus.