Hanastrew would happily post notices she thought would help the Queen and/or Kingdom security. (Eileen definitely wouldn't, taking the attitude if she's going to post propaganda, she'll at least put up her own!). Hanastrew would post stories of magical mishaps and share her thoughts on the joys of chocolate. (She can and would write at length on that).
Hanastrew would have loads of friends on Facebook, mainly her fellow fairy godmothers. She'd also expose daft magical laws (which would not go down so well with the Council, though the Queen would sympathize. She has wanted to get rid of these for years but the Council to a wizard and other magical beings oppose this on the grounds you never know when these laws might be useful again. The Queen could impose her will here but she is the one wanting to bring a bit more democracy to the magical world so has kind of boxed herself in here. Eileen would say it serves her cousin right).