It's probably not "inappropriate", so long as it's done tactfully, however there's no guarantee that she will reply (you may be better off assuming that she will not reply; that way you can't be disappointed). Also, repeated attempts on your part may be misconstrued as 'harassment', - this is obviously the main issue with trying to contact her (repeatedly).
The best way forward might be to briefly contact her, just saying that you're all happy and healthy etc... a reassuring email without putting any pressure on her to reply. I'm sure she'd like to know that you're all ok, but she may not want the pressure or responsibilities of being a mother/grandmother to you all, which is why she may not contact you back. Also, any family that she has now may have difficulties accepting that she has other children, which, again, may make it difficult for her to reply to you.
Also, make sure that you definitely have the right person :) Good luck.
Contacting Facebook administrators can prove to be frustrating. Seeing as how Facebook is free there is no immediate help solutions. But you can contact them through the help settings on Facebook.
You can contact them through their facebook or myspace accounts. You can also contact them through email.
To get help reporting a scam Facebook page use the report feature on Facebook or contact Facebook through the help tab.
You can contact MagiChinese through magichinese.com ,magichinese@hotmail.com, or its Facebook, Twitter, LinkedIn official account.
Professionals may contact Tosh.0 through Facebook or Twitter.
through email, on twitter, or facebook, or myspace, any of the social networks out there.
To contact Hilly Hindi, you can reach out to her through her official website hilaryhindi.com or through her social media accounts such as Twitter @HillyHindi or Instagram @HillyHindi.
You can go to the Warriors website and go to the FAQ or Meet Erin Hunter. You can also contact the Erins through Facebook.
Eben now stays with us; you can contact him through this as he is no longer on Facebook.
You can contact him through his Facebook page, Gene Cornish's Guitar Club for Men
The best place to contact Dieter Zetsche is through his Facebook page. Sending messages through that site will allow him to see any information needed.
Dale often answers messages through his personal facebook page, twitter, and website.