It makes perfect sense to me.
I wrote something vaguely similar - the bit after the poem, I mean - about my son a year or two back, he has aspergers and manic depression and has made several suicide attempts, been labelled crazy etc. etc. yet through it all we (his dad and brother and I, and now his fiancee) love him unconditionally.
That is what you mean isnt it? Unconditional love. Whether it is returned in the same vein matters not.
I get sick of hearing the people who talk about "when he gets better" - as if who he is right now isnt 'perfect' enough, they are waiting til he fits their own brand of 'acceptable'. I tell them not to hold their breath...he is who he is and thats just perfect to me.
Everyone needs a Shiraz of their own, watching and waiting patiently, even if that wait is forever. I hope you dont have to.
Its a lovely poem.