Obviously (because I'm posting this intro) I'm new here, though I've lurked for a little bit. Pretty new to chastity. Spent a couple months failing at self-locking to regulate a worsening addiction to porn until I finally had the courage to tell my wife and ask her to hold my key. We have since been settling into an FLR and it's been magical. So many issues that generated from my sexual pressure and our struggles with dominance vanished almost immediately when she took that key. I'm not exaggerating when I say that chastity and converting our dynamic to an FLR saved our marriage. Plus, because of not getting myself off constantly, the sex is amazing and I've awoken her passion for me.
Welcome to CM. Her becoming your KH if she likes it can improve both your worlds. It has for our marriage. Good luck.