I actually don't think it's that creepy that Station is potentially romantically interested in Hanners.
The reason is fairly simple (albeit with a minor caveat), while I don't know exactly how long the station and its AI has existed, it's safe to assume that Station (the AI), is not significantly much more older than Hannelore. In this respect, the feelings would be similar to a childhood friend becoming or expressing romantic(ally) interest(ed).
Granted, AI in the QCverse seem to express fully adult cognition when they are created, but even very advanced AI in this universe can still grow in unexpected and altogether 'human' ways. Having adult cognition doesn't preclude a sort of child-like naivete during the early years of a QC (or even a potential real world strong) AI.
In fact, you can see hints of that in the comparatively younger AI elsewhere in the comic. For example, while Momo is a very level headed intelligence (she'd sort of have to be, I suppose), she does clearly show evidence that she is in fact 'young'. Granted, not as young as her ~2.7 years suggests, but still showing evidence of her age simply because of her real world experiences.
Yes it can be 'creepy' in the sense that Station probably would have represented as being an 'Adult' to a young Hannelore, but on the other hand, it's not much different to a childhood friend being attracted to another.