female robot created by male scientist.  his wife dies helping him in his lab when there's an accident.  he puts her heart in the robot's body and creates a blood/oxygen circulation system in her, thus transforming her into something neither robot nor human.  He has to constantly refresh her oxygen tanks though, or her blood will run out of oxygen to support the heart and she will, in essence, die.
always very loyal when she was just a robot, she comes to fall in love with the scientist - she experiences positive emotions as power surges in her system.
But of course, he could never fall in love with her; he was hoping to save some small part of his wife, but personalities cannot be transplanted.  He begins to shut himself away from the outside world, and eventually, away from her (the robot).  She desperately wants him to return her love, and he simply can't/won't.  But the more she tries to help him and serve him and do as she believes he wants, the more he sees that she is not now and never could be his wife.  The more he shuts her away, and the more he shuts himself into the cold world of depression.
He doesn't want to see her anymore.  He tells her to leave him alone, and she protests, but does so...
...until her oxygen tank begins to run low.  She goes to see him for her "routine maintenance"...and he has hung himself.  She cuts him down and holds him in her arms, the only time she's been allowed to do such a thing...until her oxygen tank is depleted and her heart dies.  Her system having been completely dependent on it for power now, shuts down.
-------------------
Possible Titles
-----------------
Poor Reflection
"Now we see but a poor reflection as in a mirror; then we shall see face to face." - 1 Corinthians 13:12
----------------------------------------
Only Glimpse
"The story of a love is not important - what is important is that one is capable of love. It is perhaps the only glimpse we are permitted of eternity." - Helen Hayes
---------------------------------
Into Reality
"Love is an attempt to change a piece of the dream-world into reality." - Theodor Reik
-------------------