do you have the right?

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Friend A talk to me and asks me to buy her this type of slippers worth 490. I ask her to pay before i could give it to her. She said that if it's okay that she will divide the payment into two. I then agreed. The next day she paid the first half amounting to 250. Assuming that she'll buy the item, i have ordered it to the supplier. After a week, i demand the payment to friend A. However all she could say is "ah.. I don't have the money." So i told her pay it next week. After that week, i demand again and she said the same thing. After 3 weeks, i texted her, when she's going to pay. She said she's not interested anymore and i could keep the 250, by using her friends number "B". Then I plead to her in a nice way if she could just buy it coz i cant return it to the supplier since its already paid. Friend B replied in a harsh way, saying it in a harsh way that its not the right way to do business and they are not going to believe that crap.Any court we go, i can't force her to buy it" I got frustrated to the way she texted the message. Do she have the right to say it in the harsh way? Am i right that if she had tell it earlier, i could have done something about the item she asks me to buy to her? Or do she have to buy it because she just asked me to buy it for her?