Unfortunately, there is no way that administrators can "look" in on members who have not been active for awhile, by sending emails to them.
While we certainly appreciate that you are concerned about this member, the best thing you can do is to pm them and hopefully they do receive email notification of pm's to them, and they will come back and answer you soon.
This happens often with members who need a break, life gets too busy to be online, hospitalizations happen without warning, some may loose internet service, etc etc. This is something that happens being in an online community. We know it can be difficult to deal with at times, but the best thing you can do is to do your own self care.

sabby