My DD has been extremely tired for a few months now. She isn't a great sleeper (has ASD and needs medication to get to sleep). We are used to her being tired due to her anxiety and sleeping problems but for the last few days she has been excessively sleepy and we are a bit worried. She has been difficult to wake, more than the normal grumpiness we always get. She fell asleep in the bath in the morning which is dangerous, nodded off at a relative's house and fell into a deep sleep for hours on the sofa and was almost impossible to wake her. She has been up since 12.30 today and was ready for bed by 7.30. No temperature or illness symptoms. Totally out of character as she usually can't sleep anywhere except a bed at night time.
She has just started her periods and is growing into a real womenly shape, over 5 foot tall but slim. She is very pale and off her food a bit. Usually eats well and a varied diet but not big portions. She has a multivit everyday to be on the safe side.
Is this the result of puberty onset plus ASD anxiety and the struggles of year 6 at school, or does she need to see a GP?