If Martha Liberty lives with her great-grandchildren and their kids, could she be aware of modern tech far more than any other member of the SC? Think about it. Even if her blood don't have magical power like she does, they would be living pretty normal lives and be aware of things like the internet and twitter and facebook.
If her family is kind of like Murphy, vanilla (or in this case plain chocolate) but aware of the magical world, she could use her family to watch the internet for things and contact people she cannot directly speak with because her power would make the computer blow up.
And as seen in SG, if she has even a basic circle in the computer room, she could sit there and watch in a protective circle as her family member responds to e-mails and such. The circle would keep in her magic and keep the computer safe.
Having contact via the internet would help with a lot of her contacts.