The sign of head injury
1. Loss of consciousness
2. Episode of vomiting after the injury
3. Ear, nose, throat bleed
or confused behavior.
5. Abnormal reaction of pupil to light.
If you found any of the above symptoms than you must go to ER and get CT head done. Else give Ice fermentation along with analgesic
and anti-inflammatory drugs to reduce pain and swelling.
If there is no sign that are mentioned above than she can go for sleep and take rest.
Hope this will help you.