My primary carer is my surgeon,but I see my onc also every 3 months, my surgeon said in the first year they like to see me every 3 months. Your mum is probably being monitored but she can always make an appointment in the meantime!
Sorry you haven't had any replies to your question as yet, but hopefully someone will now see it. You are more than welcome to give our helpline a ring and have a chat with the staff there. The helpline is closed on Monday this week due to the Bank Holiday but will be open again on Tuesday at 9am - 5pm, 0808 800 6000, calls are free.