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Bobbi Kristina Brown is thanking her late mother after she walked away from a car accident without a scratch on Wednesday.

"My#PersonalGuardianAngel -- thankumom," tweeted Brown. "NotAScratch&ok --- Wow,PraiseGod."

Policesaid speed was likely a factor when the19-year-old daughter of the latesinging superstar lost control of her Chevy Camaro and crashed down anembankment, through several small trees and onto a jogging trail inGeorgia, reports the Daily News.

GeorgeGordon, spokesman for the Alpharetta Department of Public Safety inGeorgia, noted that alcohol and drugs were not a factor. He said policefound Brown standing outside her wrecked car after a passerby reportedthe incident.

The 19-year-old was given a ticket for "failure to maintain lane" and must appear in court, police said.