YOU SAID:

We were about to leave home when it happened to me where the tickets might be.

INTO JAPANESE

チケットがどこにあるのか私に起こったとき、私たちは家を出ようとしていました。

BACK INTO ENGLISH

We were about to leave the house when it happened to me where the ticket was.

INTO JAPANESE

チケットがあった場所が私に起こったとき、私たちは家を出ようとしていました。

BACK INTO ENGLISH

We were about to leave the house when the place where the ticket was was happening to me.

INTO JAPANESE

切符があった場所が私に起こっていたとき、私たちは家を出ようとしていました。

BACK INTO ENGLISH

We were about to leave the house when the place where the ticket was was happening to me.