a match that was abandoned during the 23rd over due to rain, bowling just nine deliveries and finishing with figures of 0/5. She took her first ODI wicket four days later at Blacktown International Sportspark, helping Australia bowl out New Zealand for just 125 which led to a comfortable nine-wicket victory. At the 2012 ICC World Twenty20 in Sri Lanka, Jonassen played all five games and claimed five wickets at an average of 14. She delivered her best performance of the tournament in the final against England, taking 3/25 from four overs with Australia winning the match by four runs. 2013–15: Second world championship, Test debut Jonassen was named in Australia's squad for the 2013 Women's Cricket World Cup but, after failing to recover quickly enough from knee surgery on her medial meniscus in early January, she was withdrawn days before the team traveled to India for the tournament. On 20 August 2013, Jonassen made a strong return to international cricket by "(spinning) Australia to victory" at Lord's in the first ODI of the 2013 Women's Ashes. She took 4/38 from 8.3 overs in the 27-run win and, alongside fellow spinner Erin Osborne, orchestrated a batting collapse as England fell from 1/99 to 176 all out in the space of 20 overs. At the 2014 ICC World Twenty20 in Bangladesh, Jonassen played all six matches and took six wickets at an average of 19.16. She bowled tidily in the final against England, finishing with figures of 0/16 from four overs before Australia went on to win by six wickets to claim another world championship. Her role within the team during the tournament also consisted of being elevated to an opening batter for the semi-final and final. She continued in that position throughout Australia's next seven T20I matches, peaking with back-to-back Player of the Match performances against the West Indies in which she scored 46 off 51 balls on 2 November in a four-wicket win at North Sydney Oval and 47 off 39 balls on 5 November in an 86-run victory at Adelaide Oval. Jonassen made her Test debut at the St Lawrence Ground during the 2015 Women's Ashes. She played a critical hand with the bat in both innings which earned her Player of the Match honours and helped Australia defeat England by 161 runs. Coming to the crease on the first afternoon with her team in trouble at 4/87