There are many reasons for broken sleep, so without taking a full case history it is difficult to be precise. It would be interesting to know if she usually wakes at approximately the same time as, according to the principles of traditional Chinese medicine, the hours between 11pm - 1 am are associated with gallbladder function, 1 - 3 am with the function of the liver and 3 - 5am with the lungs. Too much Fire energy in the relevant energy systems can be addressed by diet, Chinese herbs or acupucture. Failing that, homeopathy would be a good option. I also often recommend that clients with this type of problem use a quilt which contains a bioceramic fibre that re-balances the body temperature. 

Amanda Kenton