by letting you share her one-room world for a while 
(ROOT (PP (IN by) (S (VP (VBG letting) (S (NP (PRP you)) (VP (VB share) (NP (PRP$ her) (NML (CD one) (HYPH -) (NN room)) (NN world)) (PP (IN for) (NP (DT a) (NN while)))))))))
(ROOT (PP (IN ) (S (VP (VBG ) (S (NP (PRP )) (VP (VB ) (NP (PRP$ ) (NML (CD ) (HYPH ) (NN )) (NN )) (PP (IN ) (NP (DT ) (NN )))))))))