Keri Lynne Devlin, 33, was driving in Stamford when the dispute began, Greenwich police said.
Devlin pushed a family member out of the vehicle, causing her to strike her face on a cement sidewalk, police said.
The passenger got back into the vehicle, but Devlin repeatedly struck her and smashed her head into the dashboard, police said.
When they arrived back in Cos Cob, the passenger got out of the vehicle and fled to the rear of the home, police said. Devlin chased her, pushed her to the ground and kicked her several times in the face, police said.
An elderly family member tried to intervene but Devlin struck that person in the face, police said.
Devlin followed the older family member into the home and pulled the telephone out of the wall as that person was calling 911, police said.
Devlin struck the older family member in the face again before fleeing the residence, but was stopped shortly after by Stamford Police, Greenwich police said.
Devlin, of 17 Circle Ext. Drive, was charged with second-degree assault, third-degree criminal mischief, disorderly conduct, interfering with a 911 call, first-degree reckless endangerment, second-degree unlawful restraint and assault on a person more than 60 years old.
She was held in custody on $25,000 bond.
She is also facing domestic violence and motor vehicle charges in Stamford, Greenwich Police said.
Greenwich Police didn't release the family connections between Devlin and the two victims.
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