Time to say thank you

I never found the words to say to you.
Those little ways to thank and acknowledge
all of which you gave in selfless suffrage,
borne love to me in blind devotion true.

(My father rots with Cancer as his friend
and I feel hopeless fighting for his life.
Dull punches fall like jelly 'gainst cruel time,
made impotent in bones which will not mend.)

You raised me from a babe into a man;
cheered, at football fields and graduation.
Showed pride in my facing tribulations,
and where I faltered, made me understand.

The ticking of the clock would have you leave;
time to say 'thank you', and then time to grieve.

(14 line sonnet. ABBA CDDC EFFE GG rhyming pattern)