@ EverRose You're right! I was under the impression that it's not certain if she's mortal or not, but since she can transform and is a Downworlder... Haha my bad
To make things worse: Remember that Will and Jem and Sophie and Charlotte and Henry and Gideon and Gabriel and EVERYONE dies and Tessa is still alive in present time Mortal Instruments. Bittersweet her ending choice will be. :3
You're right! I was under the impression that it's not certain if she's mortal or not, but since she can transform and is a Downworlder... Haha my bad