It was nice to chat with you earlier. I hope your mom is not suffering too much and you are feeling better.
It is very worrying and scary to see someone we love suffering and not being able to help. When I was in liver failure in 2004 one of my sons used to sit beside me jsut holding my hand. His girlfriend, now is wife and mother of my first grandchild, Leila, would hold the other hand. My younger son and his wife couldn't cope with my illness and acted as though I was well. Sometimes he would ask my husband "How's mum?" but never a question to me. I think he was frightened and if he didn't accept I was sick, it would go away. My husband was very supportive. I know how much your mom would be appreciating you right now as this is something I have been through.
Once she has the ct scan you should have more idea of the next step. Don't let the doctors put you off. If you have questions, write them down and take the list with you. Don't leave until you are satisfied and understand what they are saying. Write down the answers so you can research further. If you are still disatisfied with the treatment ask for a referral to a different doctor. It is your right to good medical assistance. I have read many Forum members posts relating stories of disatisfaction with medical staff. You need a doctor you can talk too and feel comfortable with as well as one who is good in their respective field.
Your mom is very fortunate to have you. I know she is appreciating you. Be comforted by the fact you are doing all you can for her.
Take care. Hope we can chat again.