I don't think that Lena would write him a letter. I think she would sit him down in a kitchen chair and have a "talk".
Check the description of Mama at the site below... there is an excellent paragraph on what Mama wants for Walter.
In stead of a letter... you might write a "dialogue" for a skit between those two characters.
http://www.sparknotes.com/lit/raisin/canalysis.html
What advice should Lena give walter from a raisin in the sun to change the outcome of the novel? i need help with idead so I could write a letter to him?
3 answers
the assignment wants me to write a letter
Then use that site to give you an idea of what Lena would say... Then think of how your Mom would write to you; that should give you the kind of letter Lena would write.