Good morning seltaeb7322.
I thought of something this morning.
I have people in my contacts that have multiple phone numbers.
Some have personal cells, work cells, home landlines, work landlines, etc.
Apple OS's like to group messages to and from all of the different numbers into the same thread. This has been a HUGE pain for me because it causes texts to be sent to their work cell when I needed it to go to their personal cell or vice versa.
With all of that being said, are you sure that your texts are going to the correct number and not a different one that you have stored in their contact card?
Can you text the other gal and have her confirm the phone number she is using?Then, if you do have multiple #'s for the GF, there are multiple ways of doing this so here goes one...
Delete the thread with your GF. Start a new thread with her but pay attention to the ">" and be sure to select the correct number for her iPhone. Send her a message and see what happens.
The Facetime thing still has me weirded out and I've just been trying to focus on one thing at a time.
I'm almost wondering if these issues are coming from your provider. Have you tried contacting them? I believe that they have settings on their end that say how to treat your phone (Apple or google). Maybe it's on their end.