I know it doesn't help you get the system email to her, but you could run a report and get her Yes & No links, then just email them to her separately.
In your Invitees & Registrants report, on the Fields tab, look under the Registration Information section and you'll see options for "RSVP Yes URL" and "RSVP No URL". If you add those to the report, there will be a unique link generated for each person on your invitation list.
Over the years, we've had a LOT of difficulty getting emails to our attendees at different companies or in government. We finally were able to work with our IT and Cvent to implement DKIM key that allows our emails to get through. Don't ask me what any of it means, or if it's the issue you're having! All I know is that my emails finally get through.
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Lauren Becker
Travel, Meetings & Incentives Web Content Coordinator
Aflac
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