macbook pro and iphone5 using usb connection

Rayzbo, to get the photos on your wife's phone you will need to sync with iTunes again. You can't manually put the photos back on the phone. First load the photos into the photos app on the mac and then perform the sync in iTunes. For the messages issue. It is my understanding that iMessages knows whether a phone it is messaging is iphone or not. If you notice that your conversations with other iPhone users are Blue and grey while non iPhone users are green and grey. I do recall seeing messages in these forums about users having friends switching to android phones and no longer being able to message them. There is a way to have them remove themselves from the imessage list. I would recommend searching these forums. So from that I would expect that if your wife has both an iphone and the Galaxy 6 then you are not going to be able to use imessages to message her on both phones at the same time. There are alternatives that will send SMS messages.