Ok - first - feeling a little stupid because the child workflows were set to "background" processing. When I returned to the form, the emails were there.
However, when I open the email it gives me the message "This message has not yet been submitted for delivery. For more information, see help.", which was no help at all.
Just above the body of the email message it says "The email below might contain script or content that is potentially harmful and has been blocked. Open Message". And it allows me to open the message. However, there is NOTHING harmful in the message, just text and filled in fields from the template.
The Activity Status is "Pending Send", but I have no button to actually "send" it. I have buttons for Reply, Reply All, Forward, etc - but no Send.
I also need to add an attachment in addition to the standard one on the email and there is no mechanism to add an attachment (no + button or any menu options).
I imagine this is due to the error, but I can't find out what the error is or how to fix it.
Thanks for getting me this far. Continued help would be appreciated.