I wish your mom a speedy recovery.
If you are interested and open to other means of healing done by someone else, then I recommend you check out Anthony Vivero, a Philippine-based healer who has helped many people with severe, serious diseases, including victims of witchcraft, etc. around the world through his healing center or thru distant healing. I have read about him many years ago and the feedback on his ability is good. He is also recommended by another psychic/energy healer (in FB) who also uses Sapien audios (Patreon) and YT. He may be able to help your mother. There are many testimonies from patients on his FB page.
All you do is follow his FB page and just post your mom’s name and birthdate on the comment box whenever he posts his free distant healing session notice which is twice a week, Wednesdays (or Thursdays) and Saturdays usually at 11 am (Philippine time).