Don’t know what to say

Hello,

Mum 82 & frail.
Has a AAA (Abdominal Aortic Aneurysm) which is 6cm.
She has to make a decision whether to have it repaired or not.
She had a heart valve replacement December ‘25 & it has taken her a long time to recover from this.
We have discussed this as a family (also Dad 85) & I have given my views/opinion.
She is constantly texting me & expecting me to make a decision for her.
Has anyone else been in this situation.
I really don’t know what to do or say?
Thank you