Advancing toward 2nd

[tetris]

My girl (batter runner) started for 2nd base after an overthrow was made on her @ 1st. After 3 steps she returned to the base when she realized she could not make it. Opposing coach called to her player to tag her...which she did but she was already back on 1st. Umpire called her out because he said she intended to go toward 2nd. Is this a good call. This happened this weekend in Cheshire Ct 14U pony tournament