Wow... This is interesting.
I've seen fics describing life for Ukyo after Ranma marries Akane,
but I've never seen one where her character had been so entirely raped,
both figuritively and literally.
Personally, I've always believed that Ukyo can be entirely
stubborn at times. She first met Ranma in a ten year old fit of rage, but
fell in love with him after he muttered one word. I believe that the word
"friend" would have the same effect on her, in that it would serve to
completely alter her into becoming the best friend he has. While I
believe that it is possible to for her to become an alcoholic spermbank, I
find it unlikely.
That being said, I must admit that I find your writing style to be
very appropriate for the plot. You give glimmers of hope throughout, but
they always lead to depression. You certainly left me sad right
up until the ending. This is absolutely SCREAMING to be continued. You
have to give the reader some emotion in the end, not the completely
emotionless Ryoga saving Ukyo and she runs away. I was left sitting at my
computer thinking, "Was that a sad ending? No. Was that a happy ending?
No." It was just an ending. Were you to either revise the ending or write
a sequal, this would be, at least, fic of the quarter.
-M