YOU SAID:

she pushed me next to a stairwell, causing me to fall down the stairs

INTO JAPANESE

彼女は私が階段から落ちる原因と、階段の横に私をプッシュ

BACK INTO ENGLISH

She pushed me beside the stairs, causing me to fall from the stairs

INTO JAPANESE

彼女は私が階段から落ちる原因と、階段の横に私をプッシュ

BACK INTO ENGLISH

She pushed me beside the stairs, causing me to fall from the stairs