A warm welcome to the forum.
It sounds like your mum has had a terrible experience with DBS following her operation which I’m truly sorry to hear about. You mentioned that she went back to her doctor, however, has she tried speaking to a Parkinson’s nurse? Parkinson’s nurses have specialist experience, knowledge and skills in Parkinson’s and may be able to offer your mum more information and support that is specific to her situation.
If you contact our helpline, one of our advisers can arrange for a Parkinson’s nurse to call your mum back in 24 hours. Please give them a call on 0808 800 0303.
Do keep us posted on this.