Wikström achieved a first international success with the victory in the slalom at the Trofeo Topolino 2007. In November of the same year she took part in FIS races for the first time and in February 2008 achieved her first podium. After she had already contested her first European Cup race in January 2008 , she started regularly in this racing series from the 2008/09 season . In November she got her first European Cup points at the races in Funäsdalen, Sweden, and shortly afterwards she surprisingly achieved third place in the Trysil slalom . However, this was followed by a few failures and for the rest of the season she was no longer in the top 30.
On January 30, 2009 Wikström started in the slalom of Garmisch-Partenkirchen for the first time in a World Cup race, but could not qualify for the second run. At the beginning of February she finished second in the Super-G at the Swedish Junior Championships and a little later she won the gold medal in slalom at the European Youth Olympic Festival . At the Junior World Championships in 2009 , she reached 27th place in the downhill and slalom and 29th place in the Super-G but no top places. At the end of March she was Swedish runner-up in downhill and super combined. On November 29, 2009 Wikström again achieved a podium finish in the European Cup in the Funäsdalen slalom and the day after she celebrated her first victory in the second slalom. In the discipline ranking she achieved second place. In 2010 she became Swedish junior champion in slalom and downhill. At the Junior World Championship in 2010 , her best result was 13th place in the downhill, in 2011 and 2012 she finished tenth and eighth in slalom, respectively.
Wikström got her first World Cup points when she finished 13th in the slalom in Semmering on December 29, 2010 . At her first world championship in 2011 in Garmisch-Partenkirchen , she was 24th in the slalom. In March 2011, she won her first Swedish championship title by winning the super combined . On January 3, 2012 Wikström reached her first top 10 result in the World Cup with seventh place in the slalom of Zagreb . She achieved her best result so far with fourth place in the slalom of the World Cup final of the 2011/12 season in Schladming . At the 2014 Winter Olympics in Sochi , she reached sixth place in slalom on February 21. At the 2017 World Cup in St. Moritz , Wikström won the bronze medal in the team competition .