What is the difference between "potential for" and "potential of"?
The prepositions "of" and "for" in a sentence can often get confused but have different meanings. "Of" often indicates ownership of something or expresses the result of something while "for" usually implies a purpose or tells the recipient of something. So in this case, "potential for failure" means that failure is the purpose of what she had set herself up for. If you were to say "potential of", this would imply more that failure is a consequence or a result. Both of these prepositions can be used here but "potential for" sounds more natural.