I can't look at the texts per say. They are on her phone which is locked. I don't have the passcode.
If you ask me, that is a HUGE red flag. If she's got nothing to hide, there shouldn't be a problem with it. I have no problem with my WW looking at my phone even though doing so would show her that I know everything that she has been up to. I have nothing to hide.
Me: 48 y/o W: 47 y/o Together: > 20 yrs BD: Dec '15, then S 2nd BD: Mar '16, then I filed for D April '16: started piecing