tofu

you can try HandyDART CUSTOM TRANSIT, they will drive your grandmum to shopping or dr appt.  or... at whenever time she requested.  there is no charge, the fee is paid by government.  hoever when your grandmum orders the service, she has to speak english
she can request social service, someone will drop by couple times a week to help her to do some housework.
if she just need help to do grocery shopping, she can go to safeway.  safeway has delivery service