Theresa

Theresa is a side character in the Elsaverse that appears in several games. She is a waitress at the Delfinos restaurant, and also a member of Xara's Angels, as she has the power to detect when someone is telling the truth.

Personal
Theresa is first introduced in the Elsaverse in Dreaming with Elsa (2015), during Elsa's first night out in years, when Jason takes her to the Delfinos, Elsa's favorite restaurant in Sangrive. Theresa is their waitress and she immediately draws Jason's attention, but also Elsa's, who can't help but notice Theresa's curves. In fact, she makes such an impact that Jason even dreams of her stripping for him that same night. After the events that led them to understand their dream connection, the couple would visit the Delfinos relatively often; sensing Jason's interest as well as Elsa's curiosity, Theresa would flirt with both of them. Then, one night, Elsa uses a dream spell to link their dreams and, after explaining to Theresa that this is not an ordinary dream, they ask her if she would be interested in a sexual threesome; much to Elsa's and Jason's surprise, Theresa quickly accepts the strange situation and happily agrees.

Of course, what Elsa and Jason still don't know at that point is that Theresa has a supernatural ability that lets her know when someone is telling the truth, and she could see they were totally convinced of their odd claims regarding the shared dream. It's not disclosed when Xara became aware of Theresa's existence, nor how she did it, but she eventually finds the waitress and, right after convincing Jessica Springfield to join her side to fight Morland Reyes, the short, blind woman tries to recruit Theresa too, as it's hinted in Redemption for Jessika (2016) post-credits scene. Theresa then becomes a part of Xara's Angels, the small group of people with powers that is trying to stop Morland. However, she is a member just for a couple of weeks at best, before they accomplish their mission.

After contacting Paul to get to Morland's daughter, Chloe, both Xara and Miranda realize he may have a power too. When they confront him, Paul is about to run away from them, feeling exposed, but the group uses Theresa to make him trust them: she tells him about her own power and, after testing her ability at Miranda's suggestion, Paul is convinced to confess his power too. A bit later, and due to the doubts raised by Xara's evasive answers regarding her origins, Theresa confirms that Xara is actually trying to bring Morland to justice. Theresa's power is also used later on to confirm that Chloe was actually their mole all along and is also trying to stop her father; Theresa takes part in the final battle too, fighting with her friends against Morland's muscleman, Atlas.

At some point, though, Theresa also draws some undesired attention. Lara, the Internal Affairs officer from the Sangrive PD who also works as a liaison for the authorities who are covertly trying to tackle the powers' issue, is perfectly aware of her unnatural ability. It's not clear whether Theresa is also cooperating with her or just a subject Lara is keeping an eye on: Theresa assures Detective Nathanial Blake that Lara is not lying when she says she has her best interests at heart and states that Lara has never forced her to do anything she feels uncomfortable with. However, when Lara asks her if she knows more people with powers, Theresa lies and says no; and, when Lara tries to use her to find out whether Blake knows other people with powers, Theresa mysteriously covers Blake's lies. This raises a reasonable doubt about all her previous statements and makes Lara suspicious of her.

Powers
Theresa is a lie detector: she sees a tint of green when someone is telling the truth, a tint of red when they are lying, and a mixture of both if they are being evasive. Lara states that she's way more effective than any lie detector machine; Theresa, however, is not a fact-checker: if someone firmly believes in a falsehood, she would see green color. It's not clear whether her power only works when talking to people in person, although her focused look when she is judging a statement would seem to indicate so. But the most intriguing part about her power is that it has shaped her character in a quirky way: as Detective Michelle Won guessed, and Detective Blake was able to confirm firsthand, Theresa is an extremely good liar herself, having learned from all those liars she has detected on her life. And, as Lara puts it, who detects the lie detector?

Miscellaneous

 * At some point during the development process, Tora Productions writer, Tlaero, seriously considered creating a game with Theresa as the main love interest. However, she eventually decided against it, since Theresa's power would have made it quite difficult to find an interesting gameplay mechanism for it.