The dizziness, fatigue, nausea/vomiting, may be related to the head injury if it was recent and the abdominal pain/cramping may be related to the
vomiting or cervical
cancer. It could also be that the
cancer has spread to other areas like the brain, stomach, etc. Was she checked for metastasis in ER? Was a cat scan or MRI done of her head and stomach at the hospital?
I'm sorry I couldn't offer more to helping you/her figure out the exact cause.