Well that's certainly a question in canon, but in this fic that's mostly been answered by how she handled Taylor. And even in canon I'm pretty sure we have confirmation she was horrified by a lot of the things her father was doing when she found out about them, so even in canon if she's not quite as good as Rin, she's probably better than 'the stereotypical magus.'
When Olga found out about the experiments that made Mash, she was sick over it, and she became anorexic with worry over whether or not Mash blamed her for what her father made Mash go through.
In regards to Olga's desire for recognition, this is less of a magus thing and more that her father doesn't care about her. At all. In FGO timelines, he basically abandons Olga to go play savior of the world in Chaldea, and in non-FGO Fate timelines (like Case Files), he eventually gets disgusted with her "lack of talent," and he abandons her to be raised by a nanny. So you see, all that Olga really wants is her father's approval.
She's a little spoiled from the relative privilege she was born into and she's harsh on everyone, but that's only because the person Olga is strictest with is herself. Whenever anyone looks at her, she feels as though she is constantly being judged for her inadequacies, and as a result, she lashes out by being even more of a hardass. Because her insecurities make her prickly and temperamental, the staff at Chaldea largely view her as being stiff and cruel when she's just trying to live up to the impossible pedestal she puts her heritage and her family's accomplishments on.
None of this is anything I added for Hereafter, BTW. This is all stuff that comes out either in supplementary materials or in alternate timelines.
What changed for this Olga is Taylor. They're not friends in the traditional sense, but the nature of their connection means that Taylor is probably the single healthiest and most supportive relationship Olga has. That's a little sad when you think about it. At least Case Files Olga has Reines.
