In town from Westport, Mass., with her daughter and friends for a gymnastics competition at Navy Pier, she ended up paying $200 a night to stay at the Hilton Garden Inn near Midway and then spending $308 to book two tickets for herself and her 14-year-old daughter on a JetBlue flight Monday so they didn’t miss an extra day of school and work. “If they would have given us a hotel voucher, it wouldn’t have hit too hard,” Potvin said. “But when you have to spend another $400-plus when it has nothing to do with the weather … I’m not too happy with Southwest.”