I agree with Brian when he said Sarah doesn't have royalties because Sarah did give the poem to him as a gift so technically it belongs to him.  This all happened 10 years ago, so she should just let go and move on,  it's not like she wanted to be a songwriter anyways, because if she did believe in herself that much, she would have copyrighted her poems/songs.  If her passion is to do this for a living then she should just accept the offer Brain gave her and try to get her other songs out there.