Jones, who went by the name Umm Hussain Britaniyah, had been one of the world's most wanted terrorists and was believed to be on a hit list of 20 extremists targeted by the SAS in Syria.
It was claimed in July that Jones wanted to return from Syria to the United Kingdom but was being blocked from doing so by her 12-year-old son Jo-Jo who had been "brainwashed".
Now she is believed dead after USA spy chiefs reportedly told their counterparts at MI6 that the militant was killed by a predator drone close to the border between Syria and Iraq in June.
Sally Jones was married to Junaid Hussain, a British jihadist and Isis hacker.
Jones had been a single mother-of-two living on benefits when she met her future husband, then 19, online and became besotted with him.
Jones fled to fight for Daesh four years ago, along with her son.
She encouraged followers to carry out attacks against the West while defending Isil's beheadings and vowing to do the same.
A British woman who was a key recruiting figure for Isis and who became a notorious hate figure in her home country has reportedly been killed by a missile strike by American forces on the Iraq/Syria border. Her son is believed to have been forced to execute prisoners during his time there after being brainwashed.
She frequently used her young son Jojo, 12, in the terror group's propaganda videos.
She was entrusted with leading the secretive female wing of the Anwar al-Awlaki battalion, a unit founded by her late husband that is composed exclusively of foreign fighters with the objective of planning and executing attacks in the West. "Especially after the death of Emwazi".