I didn't like Eiger when I first started playing Shadowrun Dragonfall. And I think that was the idea. She's not supposed to be friendly and likable. She's a troll, a soldier, and someone who has seen first hand what can go wrong when you place your trust in someone that can't be trusted.
I normally don't re-play part of an RPG is things don't go my way. I choose what feels right for my character and take the consequences. Dealing with Eiger is one place where I did go back though. My initial conversations with her didn't go well because I didn't stand my ground. I replayed them, being a bit more assertive, and got better results.
She never really becomes your friend (and that would probably be out of character if she did) but she becomes a trusted ally and she learns to trust you, and that's enough.
Next to Glory, this version of Eiger is a little smaller than she should be, so maybe this is young Eiger?