On Monday, Zuzanna's half-brother Emanuel spoke with Eyewitness News.
The pictures of a three-year-old murder victim are hard to look at, but the memories of last Friday are even more difficult.
"They carried out my limp sister with them. Someone told me she was still breathing so I had high hopes she was alive," said Emanuel Szyska, vicitm's half-brother.
Doctors couldn't save three-year-old Zuzanna Bzdek. She died of a single stab wound. Police say her father Robert Bzdek killed her before taking his own life in the family's Woodridge home. Emanuel Szyska, a senior at Downers Grove South High School, saw blood and tried, but couldn't get into his step-father's room.
"Soon to be divorced and I guess just him losing everything just kind of drove him over the edge. I did love him but I don't think I can forgive him for what he did," said Szyska.
"We're still investigating the motive but the family reports potential domestic issues between the father, but we're still investigating that," said Traci Stager, Woodridge Police spokesperson.
In the three days since the murder-suicide, the family says it has been overwhelmed by help offered by friends and strangers. Online over the weekend, people have donated nearly $15,000 for burial expenses.
"Just the support, everything they're providing is just beautiful," said Szyska.
Szyska says his family finds it too difficult to return to their Woodridge home, and are staying with relatives until they find a new place to live.