Scenario:

Shelly borrowed $5,785 from Margie. Both of their signatures appeared at the bottom of a note that states, "I, Shelly, owe Marggie $5,785 (five thousand, seven hundred and eighty-five dollars) and agree to pay her back in full. Signed this 27th day of September 2014." More than a year later, Margie brought suit against Shelly to recover on the note. Shelly admitted in the suit that she had borrowed the money from Margie but stated that she had repaid Margie in full, although she had no proof of payment. Is the note negotiable? Which party is likely to prevail? Explain your answer applying the law you learned and include any case law reference