AFIK, clicking "Forward" does not change the original email but copies it to a different window for editing prior to sending. At least, that seems to be the way it has always worked for me. The forwarded message ends up in the Sent mailbox while the original stays in Inbox. And yes, she is using Apple Mail.
Am I missing something?
Jon
macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365
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