Could this be a doctored fake? We would ask Anna to see the actual text message, not just the screenshot

If we get to see the actual text conversation on her phone (not a screenshot), do we see just the sender's name, or do we get to see their actual phone number?

If we see the name but not the number, we are aware that anyone can save any number under any name on their phone! So we would ask to see the actual number

If we finally get to see an actual number in a real text conversation (not a screenshot), now we would Google that number

If we cannot find it connected to the person it is supposed to be from, we get very cautious about believing the contents

If Anna tells us that the person created a fake number to text Anna, now we are EXTREMELY cautious. Because essentially, there is no way to verify what is true. It is even possible that Anna crated that number to text herself. Right? Right.

Stay safe.

Could this be a photoshopped fake? 

We would ask to see where it came from, i.e, the source email, app, etc

We would want to play around and see that the email or app is "live" & not a fake screenshot

Recall that even attorney's emails can be faked, as discussed in Evidence of Fraud

If needed, we would call the said person to verify that the screenshot or pic or video is real

Stay safe