I personally would suggest buying kanekalon braids/jumbo braids from Dr. Locks or Amphigory for this. Or if you're super under budget, you can use yarn of the same color.
Most Taos tend to just attach braids to their hoods than wear a wig for her. Since the volume of her braids is ridiculously thick, people don't go for wigs (longer wigs tend to have thinner hair and cannot replicate the volume of her braids) and just attach braids then on. Besides, we don't know how she looks like yet and as far as it goes,she's just a face with braids on.