row in (someone's) boat

Translations
делать что-то за (кого-то)
She can't always row in her sister's boat; her sister needs to learn responsibility.
Она не может всегда делать что-то за свою сестру; её сестра должна научиться ответственности.
Definitions
To support or assist someone in their efforts or endeavors, often by working together towards a common goal; to be on someone's side or to help them achieve success.