This is what I think happened to Cyborg.
I think that the Cyborg and Murdoc had a little love affair with each other, then doing what Murdoc would always do, he took advantage of her.. And her being his sex slave without knowing, she thought he really loved her. Then he left her alone in the basement.. without anyone. To die off with her love still in her.
(yeeess I kind of support MurdocxCyborg... :1)