'He was wiping off his knife': BART stabbing victim recalls horrific attack that killed sister

OAKLAND, Calif. (KGO) -- Letifah Wilson spoke to ABC7 News outside a family member's home Monday about a brutal attack in which BART police say John Cowell stabbed both her and her sister at the MacArthur BART Station Sunday night.

VIDEO: 'Remember Her' A tribute to Nia Wilson
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Nia Wilson was just 18 years old when she was killed in an unprovoked stabbing at MacArthur BART station in Oakland. Fighting through sorrow, her friends, family, and the community at large are mourning the teenager who brightened the lives of those she knew, and has inspired many who never got the chance.

Her 18-year-old sister Nia Wilson passed away at the scene. A manhunt was underway on Monday for Cowell. The 27-year-old was arrested in the early evening and was booked on assault with a deadly weapon, violating parole and first degree murder.

"I'm her protector and I feel like I didn't protect her," said Wilson.

"She's just yelling my name, 'Tifah, Tifah, Tifah,' and I said, 'I got you baby, I got you,'" said Wilson as she described the unprovoked stabbing.

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Wilson said she responded by telling her sister she loved her.

"We're gonna get through this, I got you, you're my baby sister," said Wilson.

In describing her sister Nia, she said, "The most sweetest person on the earth, she didn't do nothing to nobody I didn't do nothing to nobody and for this to happen is just outright crazy."

'I feel like I didn't protect her': Oakland BART stabbing victim recalls attack that killed sister
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Letifah Wilson spoke to ABC7 News about a brutal attack in which BART police say John Cowell stabbed both her and her sister at the MacArthur BART Station.

Wilson says she was with two of her sisters, including Nia, heading home from a family function. She says they never saw Cowell or exchanged words with him prior to the stabbing.

"All of a sudden we transfer just to get blindsided by a maniac, for what I don't know," said Wilson.

"I looked back and he was wiping off his knife and stood at the stairs and just looked. From then on I was caring for my sister," continued Wilson.

Wilson says a woman with a stroller that she and her sister had allowed to pass earlier gave her a baby blanket to apply pressure to her sister's neck.

VIDEO: This is the moment the BART stabbing suspect was arrested
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John Cowell is accused of killing 18-year-old Nia Wilson and injuring her sister Letifah Wilson at MacArthur BART. He was arrested Monday afternoon at a different BART station in Pleasant Hill.

Wilson says she was also hurting because Cowell had stabbed her after stabbing Nia.

She says when other BART passengers attempted to stop Cowell, he ran from the scene.

Describing her sister, Wilson said, "That's my heart, she was my heart, no matter our ups and downs we still come back to each other like it was nothing."

She says the family hadn't seen Nia in six months because she was with her mom's side of the family. Wilson also says they rarely took BART.

VIDEO: Heartbroken father demands justice after daughter stabbed at BART station
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A heartbroken father is demanding justice after his daughter was killed in a stabbing at a BART station Sunday night.

"As young black women, we shouldn't have to look behind our back you know, we should be living freely like everybody else," said Wilson.

"He just felt upon himself to take his anger or whatever the case may be out on innocent women," Wilson continued.

Nia's nickname according to her family was PG, short for pretty girl. They say she loved to spend lots of time getting ready and doing her makeup.

VIDEO: 'Stand down": BART stabbing victim's godfather makes plea to black community
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The godfather of Nia Wilson has asked the African-American community to 'stand down' while police investigate fatal stabbing at MacArthur Station in Oakland.

Wilson says her baby sister wanted to be a lawyer or do something in criminal justice. Also that she wanted to have a dance studio and her own makeup line.

As for her own injuries, Wilson has stitches in her neck.

"Missed the artery, thank God, missed the veins, it's pretty deep and he tried to swing twice hit me in my head, so I have a knot in my head," said Wilson.

Still she's focused on Nia.

"I want justice for my sister," said Wilson.

Go here for full coverage on the stabbing at Oakland's MacArthur BART station that took the life of 18-year-old Nia Wilson.

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