Granted I dont know the lady (she looks she know her stuff)i, and using a wiki page for psych profiling isn't exactly reliable. But she seems quite hot headed (passionte) confrontational (strong minded) and rebellious.
Here's my equally valid theory on what went down.
1. Ms. Ellsworth is actually an alien spy sent by the Reptoids of Rigel V to research this human thing called "love."
2. With no money and no job she has to use some of her advanced alien knowledge to make a living, but without drawing too much attention to herself (so creating a fusion power plant or hyperdrive is right out).
3. She claims to be a "self taught" electronics engineer and, as a laugh, does some work emulating hilariously stone-age Hew-mon technology in the form of the Commodore-64. This is quite successful.
4. She is approached by Valve. Unbeknownst to Ms. Ellsworth, the entirety of Valve is actually an elaborate cover for the Spice Beasts of Tau Ceti II. Shortly after working there they realize they cannot replace her with a Spice Beast Doppelganger like they had the previous hires, as their cloning process does not work on Reptoids (obviously).
5. Gabe (Or'tok Viershan in his native Cetian tongue) is made aware of the situation and they initiate a firing solution to rid themselves of the Reptoid.
6. Ms. Ellsworth is terminated from Valve but vows to bring down the Spice Beasts for their perfidity by waging an asymmetrical conflict using the humans own communication channels.
7. The war continues ....