请问下面这句英文最后面的定语从句“with whom.”修饰的是谁?

问题描述:

请问下面这句英文最后面的定语从句“with whom.”修饰的是谁?
She is the sister of Mary Dillon,formerly of Déanta,and is married to Sam Lakeman,with whom she has collaborated musically.

Sam Lakeman
she has collaborated musically with Sam Lakeman.