I'm sorry to read about your sister's diagnosis. It might help for you to talk all this through with a member of staff on the helpline. Here you can ask any questions you may have and share all your concerns with someone who will offer you a listening ear as well as support and information. The number to call is 0808 800 6000 and the lines are open Monday to Friday 9 to 5pm and Saturday 10 to 2pm.
Best wishes Sam, BCC Facilitator