YOU SAID:

spill the sister tea sis

INTO JAPANESE

お姉さんのお茶sisをこぼす

BACK INTO ENGLISH

Spill your older sister's tea

INTO JAPANESE

姉のお茶をこぼして

BACK INTO ENGLISH

Spill my older sister's tea

INTO JAPANESE

私の姉のお茶をこぼす

BACK INTO ENGLISH

Spill my older sister's tea