[[File:Opals press conference at AIS with Lauren Jackson, Carrie Graf and Jenna O'Hea (part 1).ogv|thumb|Lauren Jackson, Jenna O'Hea and Carrie Graf at a 14 May 2012 press conference at the Australian Institute of Sport]]
In March 2007, sheO'Hea was named to the national team what would prepare for the 2008 Summer Olympics.<ref name=kneeouchouch>{{cite web|url=http://www.adelaidenow.com.au/sport/basketball/phillips-keeps-opals-place/story-e6frect3-1111113147190 |title=Phillips keeps Opals place |publisher=Adelaide Now |date=12 March 2007 |access-date=8 May 2012}}</ref> She participated in a week-long training camp with the national team in Canberra in late March and early April 2008,<ref name=goodluckbejing>{{cite web|url=http://www.sportsaustralia.com/articles/news.php?id=3435 |title=Opals twelve for Beijing test selected |publisher=SportsAustralia.com |date=8 April 2008 |access-date=8 May 2012 |url-status=dead |archive-url=https://web.archive.org/web/20131219185711/http://www.sportsaustralia.com/articles/news.php?id=3435 |archive-date=19 December 2013 }}</ref> but did not make her Opals debut until 2009. She was named in the 2010 Opals World Championship Squad.<ref name=bbballaustralia/><ref name=wnbl/> In mid-2010, she participated in a tour of China, USA and Hungary,<ref name=quartert>{{cite web|url=http://wwos.ninemsn.com.au/article.aspx?id=1078556 |title=Opals hit road for world title lead-up |publisher=Wwos.ninemsn.com.au |access-date=8 May 2012 |url-status=dead |archive-url=https://web.archive.org/web/20150722045230/http://wwos.ninemsn.com.au/article.aspx?id=1078556 |archive-date=22 July 2015 }}</ref> and in 2010, was a member of the senior women's national team that competed at the World Championships in the Czech Republic.<ref name=bbballaustralia/><ref name=aisbook-45>{{cite book|page=45|title=AIS Basketball 2011|publisher=[[Australian Sports Commission]]|author1=Australian Institute of Sport|author-link=Australian Institute of Sport|year=2011|author2=Basketball Australia|author2-link=Basketball Australia|location=Canberra}} This is a booklet published by the Australian Sport Commission, has a copyright notice on the page following the cover page.</ref> She missed the Olympic qualification series in July 2011 because of WNBA commitments,<ref name="cambageallstar" /> but was named to the 2012 team.<ref name=bbaustralia>{{cite web|url=http://www.basketball.net.au/index.php?id=651 |title=Basketball Australia : 2012 Squad |publisher=Basketball Australia |year=2012 |access-date=1 May 2012}}</ref> In February 2012, she was named to a short list of 24 eligible players to represent Australia at the [[2012 London Olympics]].<ref name="londonprepares" /> Opals teammate [[Lauren Jackson]] named O'Hea and [[Belinda Snell]] as players who would step up after [[Penny Taylor]] was injured and ruled out for London.<ref name=pennyruledout>{{cite news |url=http://www.dailytelegraph.com.au/sport/london-olympics/lauren-jackson-says-others-must-fill-void-left-by-injured-penny-taylor/story-fn9dirj0-1226345953945 |title=Lauren Jackson says others must fill void left by injured Penny Taylor |newspaper=[[The Daily Telegraph (Sydney)|Daily Telegraph]] |date= 3 May 2012 |access-date=5 May 2012}}</ref>
SheO'Hea participated in the national team training camp held from 14 to 18 May 2012 at the Australian Institute of Sport.<ref name="trainingcamp" /> The local paper expected that she would be an Olympic starter in the 2012 Games.<ref name="resignteamrangers" /> Opal players who make the team wear [[Dunlop Volleys]] shoes, which are highly coveted by O'Hea.<ref name="moreresinignnews" /> In early May 2012, O'Hea and several of her national team teammates did a strength conditioning effort in the lead up to the mid-May training camp.<ref name="resignteamrangers" />
O'Hea, as a member of the 2020 Tokyo Olympics Opals team, had a difficult tournament. The Opals lost their first two group stage matches. They looked flat against [[Belgium]] and then lost to [[China]] in heartbreaking circumstances. In their last group match the Opals needed to beat [[Puerto Rico]] by 25 or more in their final match to progress. This they did by 27 in a very exciting match. However they lost to the [[USA]] in their quarterfinal 79 to 55.<ref>{{Cite web|title=Australian Olympic Team for Tokyo 2021|url=https://www.theroar.com.au/olympics/australian-olympic-team/|access-date=2021-10-14|website=The Roar|language=en-US}}</ref>
