Copy/paste will certainly work. Or you could quote the message and then remove these outermost opening and closing quote tags:
[quote author="Patti"] (original message here) [/quote]
so that your entire message isn't quoted and will look the way you originally intended. And be sure to re-enter the name(s) of the member(s) you're sending the copy to, or else you'll receive an error when you try to preview or send it.