A 37-year-old woman was charged with assault and criminal possession of a weapon for a slashing incident on a Bronx bus that apparently started after another passenger tried to pet her dog.

But alleged slasher Shekema Young says she was simply defending herself, telling reporters as she left the NYPD’s 40th Precinct in Mott Haven yesterday, "Sorry for what? I’m innocent."

On Monday afternoon, police say a 22-year-old woman reached over to pet Young's dog on a BX2 bus, but Young allegedly objected and the pair's argument turned physical. According to the NYPD, Young slashed the 22-year-old, as well as her 20-year-old female friend during the fight.

After being slashed, the two women left the bus at East 149th Street and Morris Avenue and ran to Lincoln Medical Center for medical attention. Young also got out at that location; police say she left the scene in a green SUV taxi, headed westbound on East 149th Street.

22-year-old Imzadi Henriquez was slashed in the face and needed 12 stitches.She admitted she was partially to blame for escalating the altercation: "When I went to go touch it she got mad. We ended up having a conflict, going back and forth arguing."

Henriquez's girlfriend Demetria McClelland tells CBS 2 that the conflict almost ended as they were leaving the bus, but "[The dog owner] said something about my girlfriend’s mom, so my girlfriend went back and after the altercation happened she pulled out a sharp object and started cutting my girlfriend and stabbing." McClelland tried to intervene and was slashed on the arm as well.

“Then she kept hitting me and hitting me and I didn't know she had a blade in her hand until my girlfriend told me I was bleeding," Henriquez tells the News.

But Young's mother maintains that her daughter was simply defending herself and her dog, a shih tzu yorkie mix named Miss Beezy. "They asked to pet the dog and she said no, it's a service dog, don't pet it," the mother tells the News. "They said we'll take the dog, started a confrontation with her, and my daughter started laughing. And they got off the bus, saw my daughter was laughing, and got back on. They went to jump her."