In a complaint filed this week in the US District Court of Northern California,her father,Reynaldo Gonzalez,argues the three platforms"have knowingly permitted the terrorist group ISIS to use their social networks as a tool for spreading extremist propaganda,raising funds and attracting new recruits".
The Islamic State,also known as ISIS,ISIL and IS,has active presence on both Facebook and Twitter,though the platforms have cracked down in the past and deactivated accounts affiliated with terrorist organisations.
Google is named in the suit,filed this week,as the owner of YouTube,which the Islamic State has used to post propaganda including videos of executions.
"Google,Twitter and Facebook provide infrastructure and material support for ISIS to conduct terrorist activity,"said Keith Altman,attorney for the family."These companies are not doing a good enough job from keeping the terrorists from using their network."
In some cases,the complaint says,the social networks place ads next to Islamic State content and share revenue with the terrorist group generated from those ads.