I hope somebody will notice a known pattern in my story and can point me to suitable references for further study, or even just help me with identifying the proper psychological terms I could use for further research. This is actually something I struggle with myself, and I want to understand better what's going on as well as of course maybe find some suitable ways of dealing with the situation.
I am married since about 10 years. My wife is, and has been, suffering with anxiety disorder and depression since even before we met, and needs constant medication, albeit in small doses. Initially we had a relationship I would call "normal" at least when it came to things like "autonomy", "independence", "self-reliance" and "intimacy". Although I have to add that even during this initial period, there were often un-proportionally violent (in the emotional sense, not physically) outbursts when we had some differences most couples would have at times. But I attributed those to the effects of the drug, or rather to episodes where she wanted to get off the drugs.
Shortly after this initial stage, lasting perhaps a little more than one year, a new pattern evolved. Although it does not do the situation full justice, the best way I can describe it is that the relationship slipped into something like a parent-child relationship, rather than an intimate, adult relationship of equals. Given the past of my wife, she definitely would have some issues of "maturity", as she does not act, behave or even think like a woman being over 40. This starts with things like lack of self-reliance, difficulty to make decisions on her own, taking on and carrying responsibility, to areas such as exhibiting child like stubborn insistance rather than being rationally firm etc. Although in hindsight, traces of such behavior were around early in our relationship, it seems as if such behavior increased over the years, where I truly often feel like in a parent-child relationship.
To add another twist to this story, my wife actually is fully aware of these behaviors and she herself identifies this as a problem and wants to change. To be precise, she appears to have these "revelations" periodically, oftentimes triggered by some argument between us, or between her and her parents, and then she desperately wants to become more "mature" (her own words). But shortly thereafter, the old behaviors start to emerge. Mostly she refers back to a very protected childhood, a more mature intermezzo in a long term relationship, and then switching to become a "teenager" at the age of 30. [Btw, not quite unexpectedly, most times I bring this topic up in a discussion, it would result in her becoming very defensive and often emotionally hurt. But that, I guess, would be a normal human reaction]
I am at a point now, where this situation starts feeling like a real burden. We (rather I) decided not have children as I don't see my wife being able to handle potentially stressful situations in an "adult like" manner. Further, I am getting dragged into this child like behavior (sort of by assimilation, I presume) which affects me personally in ways I don't feel comfortable with.
I want to understand better what's going on here, how to break this pattern, or see whether I might even be encouraging (triggering?) such interactions in unwanted ways.
Any pointers or ideas where to look for answers would be most highly appreciated. I am sure this is not an unusual problem, but since I have no psychology training, I fail to even be able to narrow the subject down with the proper terms.