No she wasn't.
She was hurt when her car, which contained a gas tank, exploded. Israelies claim that it was a failed a failed suicide bombing, while she claims it was from a fault in her car. She never claimed that she was tortured.
Al-Jazeera published this video with the following information:
This Palestinian mother has returned home after 8 years in an Israeli jail...
Ahead of his release Israeli forces, raided and assaulted journalists at Israa's house.
In 2015 her car burst into flames near a military checkpoint.
she says a faulty cylinder of cocking gas exploded.
Israel called it a failed bombing and convicted her of "attempted murder".
Israa says her burns were neglected and not given proper treatment in prison.
Also the following info from this NGO-like website (Addameer: A Prisoner Support and Human Rights Association is a Palestinian non-governmental, civil institution that works to support Palestinian political prisoners held in Israeli and Palestinian prisons) almost verify the above story:
On the 11 October 2015, Israa was on her way home to Jerusalem from her husband’s family home in Jericho. She worked in Jerusalem daily due to poor economic status, and she used to bring back with her whatever her in-laws need for the home. That day she had in her car a gas tube which she used for cooking and also a TV.
When she came close to Al-Z’ayyem military checkpoint, the airbag in her car opened which caused a fire to start in the car. Israa told “Addameer”’s lawyer who visited her in Hasharon prison that “The car caught fire without me noticing, so I got out quickly, a police officer came to me with a raised weapon and started yelling at me to ‘drop the knife’ in Hebrew, I didn’t have a knife. Another officer commanded the soldiers to open fire”. “I stayed on the ground for around 15 minutes before the ambulance came.” She added.
Their differences is the cause of the fire, which one says is "faulty cylinder" and the other says "the airbag in her car".
So the main claim apparently is false.