Extra Bike

Hey there Tricats.  I'm trying to get one of my friends into triathlon and after watching us race yesterday, she is really excited to start training.  She doesn't have a bike though and doesn't really want to buy one until she's got some riding in to see if she likes it.  So, does anyone have an extra 52ish cm road bike that they would be kind enough to loan out for a little bit?  Not positive on the size.  She's 5'5", so whatever you think might work for that.  Thanks a lot.