The pilot of a balloon reported that while aloft he observed the wind increase to about 10 miles per hour, so he briefed his passengers on how to brace for a "high wind landing" and possible basket tip-over. The pilot further reported that he descended to about 3 feet above ground, and once over the target landing area he "shut off [the] fuel tanks and burners then pulled the smart vent (rapid deflation valve)." Subsequently, on touch down the basket bounced once and skidded about 15 to 20 yards before stopping with the basket tipping over on its side. The pilot reported that he secured the basket and while the passengers were exiting the basket, his ground crew informed him that a passenger had injured her ankle. According to the pilot, the injured passenger did not speak English as her first language and he was unsure if she braced appropriately for the landing or if she sustained the serious injury while exiting the basket. The pilot reported that another passenger informed him that the passenger sustained the injury while she was exiting the basket. The pilot did not report any preaccident mechanical malfunctions or failures with the balloon that would have precluded normal operation.