I vote for the Univega but if she is 5"9' unless she has really long legs a 57cm is most likely too tall for her. If she does have long legs and most gals that are that tall usually do then it might be the ticket.
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(Life is too short to play crappy guitars) 2006 Raleigh Cadent 3.0, 1977 Schwinn Volare, 2010 Windsor tourist. ( I didn't fall , I attacked the floor)