TSA staff say Mihamae refused to be go through passenger screening and became argumentative before she squeezed and twisted the agent's breast with both hands.
Police were called and say Mihamae admitted grabbing the TSA agent and continued to argue with officers before she was arrested.
Maricopa County jail officials say Mihamae was released from custody Friday. They couldn't immediately provide any information about her case status.
Phoenix TV station KSAZ says Mihamae lives in Longmont, Colo., and is self-employed.
One of Mihamae's neighbors told FOX31 Denver: "For her to be arrested for anything is totally shocking to me."
He added that Miyamae travels about three days a week.