Toni Ann Filiti, Half Sister of Sylvester Stallone, Dies 6 Weeks After Sly's Son Sage

It's been a summer of grief for Sylvester Stallone. His son, Sage Stallone, died six weeks ago and now his half sister, Toni Ann Filiti, has lost her battle with lung cancer.

Filiti, 48, died on Sunday at the Santa Monica, Calif., home she shared with her mother, Jackie Stallone, the New York Daily News reported. Stallone's sister had been in a California hospital, but she returned home for her final days after her lung cancer spread to her brain.

"I was holding her in my arms. I had just washed [her] face and told her how pretty she looked, and she just fell asleep," Jackie Stallone, 90, told the newspaper on Monday.  "She's too young to go, but she wasn't feeling any pain. What a terrible month. First Sage and now Toni. It's hard. At least they're together now in heaven."

Filiti had been at UCLA Medical Center. Her son, Edmund Filiti, said the family was considering using medical marijuana to treat Filiti.

"We are going to explore alternative treatments as soon as mom gets home [from the hospital]. We think that maybe trying marijuana, kava, different herbal treatments -- that might shrink the tumors," he said. "We are at the state where all we can do is throw everything we have got at it." 

Stallone's son, Sage, died July 13 at the age of 36. The final cause of death is pending toxicology results.

His death hit Stallone, 66, hard.

"It's tough, it's very very tough," Stallone told "Good Morning America."  "But if you have good friends and your family's support, it's just something that's a horrible situation but ... hopefully it will heal and you try to get through it but it's something that is a reality in life."

The deaths of his half sister, with whom he has the same mother, and his son come as Stallone is promoting a new action film, "The Expendables 2." The film, which topped the weekend box office, has grossed more than $52 million so far.