@pringles77: You could try heading to the Messages app > Tap the 3 dots in the top right > Settings > Chat Settings > Select Default Messaging Type, and set this to 'Automatic' to see if this helps push the message through to your daughter as a chat. Furthermore, set 'Resend Undelivered Chats' to 'No Resend' to prevent them being converted to text or multimedia messages.
I have the exact same problem its driving me crazy. Let me know if you solve the problem. I've tried everything. My husbands is working fine. Mine started when I had a power outage and I needed to put my sim into another phone. Then when I switch back when phone was charged it says everytime I go to chat messages registration failed. Google messages works fine tho but I hate the layout and prefer samsung messages. So I switched it to Samsung messages and am gonna leave it alone and see if it comes back on.