If the reason for her absence is a relationship (either a serious partner who isn't a fan of her line of work OR se doesn't want to be doing what she was doing with him, OR she has a kid now and doesn't want to do what she was doing with a kid) then I think it's safe to say that there's no way she comes back.Despite the extended hiatus, I remain hopeful that Tessa will return. But like everyone else has been saying, she should have posted a note that there would be a pause....
If she left because she had some other issue (health, family emergency, etc.) then it's pretty inconceivable that she'd still be experiencing that emergency a year later.
So I think the likelihood she returns is pretty much nil. My guess is that the best we can hope for is a random candid taken by someone else that shows up at some point, as was the case with Erica Campbell years after her departure.