My understanding of part of Janet's concern is an inability to sign in to the group page. She's able to send and receive emails, just not going to accomplish what you so eloquently detailed. ?Maybe a refresher on signing in would be in order.?
Moderators can't change email addresses for other members
For your privacy, only you can??in Yahoo Groups. If you don't have access to the email address used to subscribe to the group, you can ask Sally to remove your email address from the group, then??to your new email address.
Try this first:
Change your personal email address in a group
Need to update the email address that you use in a group? You can do it in the "Edit Membership" section.
On the group's main page, click?Membership?|?Edit Membership.
Next to "Identity," click the?Edit Settings?icon?.
Select your desired email address. Tip:?If the address that you want to use isn't listed, click?Add New Email.