I think that the craft stuff sounds great, but be aware that depending on her epilepsy she the hospital may not let her have scissors and some craft implements. When my husband was in hospital for his epilepsy surgery  he was not allowed to have hot drinks or metal cuttlery. All patients with epilepsy had to have plastic cuttlery. He does cross stitch and so some of the nurses got a bit funny about him having his needle and scissors.
Just on a positive note my husband's surgery went really well and he has been seizure free for 8 and a half months. The surgery has really improved his quality of life. In January next year he will be allowed to apply for his drivers licence for the first time ever! I hope your friend's daughters opperation goes well.