You've already got Vladlena up there, but I figured I would post anyway because...well, really just because. If that's okay!
Vladlena's feelings in regard to Søren are complicated by a tension she doesn't care to examine too closely. She respects him and his abilities without question, and he is one of the few she acknowledges as a peer in intellect and ability. He is also probably one of the few who can genuinely frustrate her, which she isn't proud of and is slightly unnerved by as well—unlike Søren, hers isn't so much a repression or denial of emotions so much as a genuine lack of them brought on by a childhood that did next to nothing to cultivate a healthy emotional spectrum, and so anything that disrupts her generally even-keeled, quietly competitive and perpetual state of focus is rather unsettling to her. She has analyzed it once or twice, because anything that disrupts her needs to be dealt with and mental disruptions should certainly not be the result of another person because it simply isn't logical for them to have an impact on her, and so she has come up with various logical theories (such as residual animal psychology functions as a result of mutual animagi training) that usually result in her deciding the issue has been addressed and dismissing it from memory. She has some level of affection for him, as she does for Fyetka (pending talking to Aero) and her other peers, and if it goes deeper than that she hasn't realized it yet, or attributes it to his being her most direct equal. Otherwise, she is careful to acknowledge him only when she has a direct need, given her tendency to be more focused on things at hand than interactions. She enjoys their rivalry perhaps more than she should, but she likes being challenged and so reads no more into it than that.
The point of all this is that Søren, maybe ironically, has probably seen more emotions out of her than just about anyone else except the House Elves at her father's home.