Disinclined to be drama queen's bridesmaid

If she offers it, you'll have to say no. Any lie you tell will ensnare you eventually. So I suggest a duck-and-cover technique that is both truthful and vague. Don't offer any excuses or reasons.

You say, "Teri, it is so sweet of you to ask me to be a bridesmaid, but unfortunately I can't do it." When she asks why, you say, "It's just not something I'm comfortable doing." The reason I don't suggest confronting her directly about her behavior is because toxic, dramatic people tend to transform every statement (however benign) into a "Lifetime" movie script.

Never communicate with her by text.