I don't understand why they picked a 40year old woman as main character. Men play these games (a huge majority). Men like to play with male characters or hot chicks. Almost nobody cares to play as 40 something woman with set personality.
Well, studies apparently find that female characters work better than male characters, because men are mostly indifferent about whether they play as a dude or a hot chick, while women overwhelmingly prefer playing as women. Not sure which demographic this one was aimed at, but let's be honest: The exact details of the character are almost wholly irrelevant, because nearly all of the gameplay will be spent looking at the character's spacesuited hand, and the only time you're going to encounter her as a person is in a cutscene. Since this is apparently a preestablished lore character, it fits, even if she's not "ideal marketing demographic".