As per you history, she has tingling in her hand only.
I understand your concer for your mother in time of this epidemic.
Yes it can be managed at home.
You can order a wrist splint( carpel tunnel) which is easily available locally or online.
It has to be worn at night.
Few medications, for that you please consult , so that a priscription can be provided. Which you can order from local or online pharmacy.
Next Steps
this is only for few weeks , you need her to be examined and investigated.
Health Tips
consult online for priscription.