Hi,
The occipital lobe is the centre of our visual perception system. The visual illusions that your daughter is seeing are most likely because of the injury to the occipital lobe. The sleep pattern however is not governed by the occipital lobe. It is quite possible that this accident has caused her a lot of stress which has resulted in her disturbed sleep and also some personality changes. Some reassurance from your side will help. You can also try counseling.
Hi there.
I'm sorry to learn what happened. The effects of the trauma should have already recovered by now, however, it is also not uncommon for some persistent symptoms to remain. The contusion may have caused some long lasting injury to the brain parenchyma and underlying white matter. Nevertheless, this should be better assessed by a neurologist and possibly have a repeat imaging study of the brain.
Regards and God bless.