Because she’s another idiot loser in a dying society where honor, love, and morality whither daily under the assault of the inane and the quest for some fairy dust sprinkled utopian self awareness bullshit supercedes the miracle RIGHT IN FRONT OF HER FACE!
In most cases it is not a rejection. In have never understood why people are so quick to draw that conclusion.
I have known who my biological father was most of my life. Since the topic was a forbidden one there was no one to ask about him. (My mom got pregnant in high school back in the days when that was not as accepted as it is today). That is an enormous burden for a young child to carry and it does creep up on you at times in adulthood.