A Kaneohe woman legally changed her name to match the surname of an 83-year-old woman so a bank wouldn’t suspect her of stealing $300,000 of the elderly woman’s money, Deputy Prosecutor Chris Van Marter told a state judge.

An Oahu grand jury returned an indictment Tuesday charging Ai Hye-Ko Fujiwara with first-degree theft. Honolulu police arrested Fujiwara later in the day. She was released Wednesday after posting $100,000 bail.

Fujiwara, 57, is the woman’s current name. She had changed it from Leanne Tolentino and had also been known as Leanne Chong-Hui Tolentino.

Van Marter told Circuit Judge Colette Garibaldi that in 2015, Fujiwara, as Tolentino, befriended the victim, who had been diagnosed with senile dementia. He said Fujiwara offered to run errands for the woman and take her to the doctor. Fujiwara then asked for and received money from the victim.

Van Marter said Fujiwara convinced the woman to sell her home, which she did for $550,000. That is when Fujiwara legally changed her name so the bank would not suspect anything unusual when she added herself to the victim’s account and opened new accounts in both their names, he said.

Fujiwara also had bank statements sent to a post office box so the woman could not see them. Over a period of about 13 months, Fujiwara stole $300,000 from the victim, according to Van Marter.

Fujiwara is scheduled to appear in state Circuit Court on Monday for arraignment.