OK, use the other method.
Once you get the memos on her computer, normal networking/sharing methods can be used to transfer them to you. No maximum size problems that often occur with emailing.
You may want to consider alternative recording apps, also. It might be handy to get one that allows breaking a long memo into several short ones. Similar to having multiple tracks on a CD/record.
There are 'editing' capabilities in Voice Memos, but I'm not sure they'd be of much use in your case.
I finally listened to the voice mail on her phone last night and made minutes and now I can forget the transfer - thanks guys / gals for your help - much appreciated....