Answer:
Her initial plan is to keep the girl and take care of her, so that her friends will be shocked and that she will do just like she has been reading, but when her and the girl are having tea, Philip, Rosemary's significant other comments on how it a bad ideal, and he talks about the girls beauty. Rosemary than gets jealous, and gives the girl money and sends her on her way.
I hope it helped!!!!! :)