location of pain? may or may not be shin splints...

http://www.medicinenet.com/shin_splints/article.htm

[Shin Splints - Runner's World
www.runnersworld.com/tag/shin-splints
Runner's World
Shin splints, the catch-all term for lower leg pain that occurs below the knee either on the front outside part of the leg (anterior shin splints) or the inside of the leg ...]


I would make sure to have every good fitting shoes for her foot.* higher end sporting/running stores can fit properly..

check for stride, leg, alignment hypermoblity?