New York Woman Killed in Brussels Terrorist Attack Posted about ISIS Four Months Ago on Facebook

The mother of the New York siblings killed in last Tuesday's terrorist attack at the Brussels airport took to Facebook to share an message her daughter Sascha wrote in the wake of November's Paris terror attacks about ISIS – the terrorist organization ultimately responsible for her death.

"During this time of grief and outrage, I want to share this message of tolerance from our dear daughter, Sascha, written by her following the Paris attacks last November," the mother, Marjan Pinczowski-Fasbender wrote.

The message, dated Nov. 16 and written by Sascha Pinczowski, 31, read: "Ignorant spreading of anti-Muslim sentiment and propaganda does nothing but benefit ISIS.

"ISIS recruiters find some young kid who's struggling to find their place in the world and say, 'Hey kid, these people don't want you. They won't tolerate you and what you believe in. Just watch and you'll see.'"

She adds, "Next thing there's a terrorist attack and the public erupts in anti-Muslim rage. Threatening Muslims and demonizing them at every opportunity."

Sascha, along with her brother Alexander, 29, were talking on the phone to their mother as they prepared to fly back to New York when the call dropped when the first airport explosion went off.

Sascha and Alexander's friends and family spent days searching for them and were left reeling after learning they had been killed.

"We are trying our best to get through this," Mark Lewis, Alexander's good friend, told PEOPLE on Friday. "It feels like a dagger in the heart."

The post was provided to PEOPLE by Laura Cain, whose sister, Cameron was married to Alexander, according to Laura and Cameron's father, Jim Cain, who spoke to the Today show.

Officials say at least 35 victims were killed and 300 were wounded between the attacks at the airport and the Maalbeek Metro Station.