I don't think I can describe her in one sentence. I'll try, but unless I'm allowed to do a massive, run-on sentence, then it'll be tricky.

The most loving, most devoted, most dedicated, most caring, strongest, most incredible person in my world; the love of my life and the delight of my soul, my everything.

(see how I cleverly use a semi-colon to extend the sentence? little thing called syntax, boys and girls. :P)