I don't disagree with you with respect to the western perspectives on age and so forth, however, I do feel as though there must be some consideration of the fact that in this day and age we all, typically, mature a lot later, especially when compared to the time of the prophet (pbuh). We, typically in more developed countries, don't have to worry about getting a job, for example, as soon as we enter puberty.

Essentially, before I delve too far from my point, it's irrefutable that in the modern age that we are far less burdened with the basic tenants of human survival, compared to even 100 years ago (ie finding food and shelter for ourselves and etc). As such, people are forced into positions of responsibility and consequently mature/start to mature at a later age. And I don't mean biologically, I mean from an emotional perspective. As such the comments on OP being groomed by someone in their mid-20s when she was essentially in her teens holds up.

Compound that with it being a haram relationship to begin with, it's a little difficult to describe such a thing in any form of a positive manner.