Is this a way to let Sandy know about Google Calendar events?

This is what I want to be able to do:

I use Google Calendar for all my appointments and want to keep it that way. I want Sandy for To Do's, reminders, and the daily digest, but I want my appointments in my daily digest. So I have to find some way for Google Calendar to tell Sandy about the appointments. Now you should see the network of listservs and email forwarding I have set up to try to get this to work, unfortunately I have been unsuccessful.

I am very close to getting this to work The set up [tangled web] I have works like this:
1)The gCal notification is sent to my gmail
2)gmail filters those out and forwards to yahoo group
3)yahoo group changes the 'from' tag to .....-owner @ yahoogroups.com
4)the yahoo group sends it to an alumni email forwarding service i have through my university (because yahoo groups said anything @ googlegroups.com isn't a valid email address)
5)Alumni forwarding service forwards it to a google group (so "remind" can be prepended to the subject)
6)the google group sends it to Sandy
7)whew

The problem is that for some reason the email from Sandy to confirm the secondary address (of the yahoo group owner) isn't getting through. I tried sending email from other accounts to the .....-owner @ yahoogroups.com address and they got through. Sandy's doesn't though :(

So I had an idea to make it easy to get gCal events to Sandy:

If Sandy would accept emails from "calendar-notification @ google.com" (without having to verify), then we would be able to to forward google calendar notifications sent to our gmail to Sandy and she would accept them. (She also would have to accept the "[Reminder]" tag that is on the front of those emails instead of the usual "r" or "remind".

So what do you say? Any way we can make this happen?