Recurve/ Horsebow bow are hard to make and also hard to find. Mine made out of a PVC pipe the was first form by someone else then I reshaped it to Merida shape.
I found this seller in my searches for more accurate versions or her base bows. Didn't get them because the shipping and customs would be a nightmare to deal with coming into Canada on this.
I also spend about 4 months hunting on ebay and didn't get one that would work for her either but you can fin Asian horsebows on ebay if your not going for 100% accuracy.