YOU SAID:

im on my way to my friend house but my mom told me t pick up my sister from school so im going to be late

INTO JAPANESE

友達の家に行く途中ですが、お母さんが妹を学校から迎えに行くと言ったので遅刻します

BACK INTO ENGLISH

I'm on my way to my friend's house, but I'm late because my mom told me to pick up my sister from school

INTO JAPANESE

友達の家に行く途中ですが、お母さんから妹を学校から迎えに行くように言われたので遅れました。

BACK INTO ENGLISH

I was on my way to my friend's house, but I was late because my mother told me to pick up my sister from school.

INTO JAPANESE

友達の家に行く途中だったのですが、母から姉を学校から迎えに行くように言われたので遅刻しました。

BACK INTO ENGLISH

I was on my way to my friend's house, but I was late because my mother told me to pick up my sister from school.