偶然彼女に会った

happened to meet her

→ 偶然
phrase Rare #33,252
happened to meet her A past-tense phrase meaning that the speaker met her unexpectedly or by chance. 偶然 means “by chance,” 彼女 means “her,” に marks the person met, and 会った means “met.”
JA: 駅で偶然彼女に会った。
EN: I happened to meet her at the station.

家を出たとたん通りで偶然彼女に会った

The moment I left the house, I happened to run into her on the street.

電車の中で偶然彼女に会った

I ran into her by chance on the train.

彼はそこで偶然彼女に会った

He happened to run into her there.

町で偶然彼女に会った

I ran into her in town by chance.