Ok, I gather she (?) is a Tohaa, but I have no idea, which one. The illustration seems to be of a Maakrep, which would fir the Sygma remarks, but isn't that CA? Strange, but I am not that versed in the fluff here. Anyway, which proxy would be a good fit, apart from the Maakrep Tracker, which isn't available as single blister? Further a possible spoiler question: After mission two, is she still available as a crew addition to the Defiance? Storywise this seems unlogical, rulewise I can't find anaything against this, but the rulebook is... well could be better...
Actually is a Fraacta Drop Unit artwork, the same that you can found in the promotional cards that comes along the ITS Packs some time ago, but, the caracter Vaarah Zaandar card comes without the Wings I did a conversión with the Makreep / Fraacta / Female Kosuil Head to anticipate You can use one of the 2 Fraacta that you can buy on single blister with any problem if you want to proxy it, or, any kind of Tohaa :D
The crew of the defiance is one of the dissapointing subsystems that I think they threw in there. Most of the crew have such minor effects and/or are redundant that it really doesn't matter. Spoiler. You get a new engineer the next mission, and two don't really do anything....
If you read the fluff at the beginning of the game, she's a defector, which means she was Sygmaa but betrayed the EI to help the humans develop their Minotaur drives. The Maakrep is probably the best fit, despite the sniper rifle she's toting. Here's hoping she gets a real mini at some point. The pack the Maakrep comes in is actually nice because every mini in it is either present in the Defiance rules or is an easy proxy (Legate => Samaritan) Yes, she is, and she's the best engineer. It makes sense for the story.
Cool spoiler, bro. The best proxy is the gorgos pilot, if you have her or can find one. There was a Spanish online store that still had her in stock in December.