@Samanthabwriter It occurs to me I’ve never depicted texting in a story or book, but I would be unlikely to do anything but add an in-text tag/mention like you specified. I have seen instances of changing font or even boxing the text in, and it takes me out of the story. Unless the work was something *extremely* playfully postmodern, like “Breakfast of Champions”-level, I think I’d always hate it. Younger readers/writers (I’m in my 40’s) might feel differently, ofc.
@Apocryphiliac Yes, I have seen texts presented almost like comic book bubbles in some children's and young adult books, but not any for adults. (I didn't think I had done much with texting either, but when I searched in my own books, I had indeed done so).