My Secret Discipline with My Wife

I'm 45 years old and have been married to my wife for nearly two decades. We've weathered the storms of life together, but in recent years, I found myself yearning for something more intimate and intense between us. I stumbled upon a world of DDLG dynamics online and was drawn to it like a moth to flame. It wasn't anything that could be described as 'domination' or control over her, but rather a mutual understanding that we could explore a deeper bond through role-play and shared fantasies. My wife is in her late 30s and has always been the more reserved one of us. She’s quiet and introspective, which can make conversations sometimes feel strained. But as I delved into this new world, I began to see her differently, more openly receptive when it came to our personal life together. A few months ago, we decided to try something different in bed. She agreed to let me take on the role of Daddy and her a daughter. It wasn't about actual age-play, but rather embracing the nurturing aspect I've always felt towards her. We established rules and boundaries, no real physical harm or anything non-consensual, and then dove into it. Our sessions are often triggered by my wife’s need for more emotional closeness and stability in our relationship. I provide that through playful reminders about doing chores, bedtime stories (which she loves), and the occasional light spanking if things aren’t going well between us. It’s a way to communicate feelings of frustration or disconnection. The thing is, I'm starting to question why this works for me. Is it because of my need to feel more in control? Or is there something deeper about providing stability and care that's fulfilling? She seems happier with our connection than ever before, but sometimes I worry I'm overstepping or misreading her needs. I'm curious if others have experienced a similar dynamic, and what they’ve learned. How do you know when it’s crossing a line from play to unhealthy control? Is this just another way of saying 'be more attentive' or is there something inherently different about the power dynamics involved? Ultimately, I want our relationship to grow and thrive without any regrets. So if anyone out there has some insights, I'd appreciate hearing them.