I'm sorry to hear that things suddenly changed for the worse for your Mom, and she has been struggling for so long. This must be very difficult for you both.
Anxiety may be related to changes in brain chemicals, and concerns about living with a long-term condition. We would always advise speaking to a medical professional about depression and anxiety and what treatments can help.
One of our Helpline Nurses will be able to help with what might be causing this for your Mom, and what to do to help her. Please do call on 0808 800 0303.
Best wishes to you both,
Joanne - Digital team.