Not being critical but your statement saying that you "allowed" her to go out with single friends seems a bit controlling. If she ever felt that she needed your permission to go out with friends that could build a lot of resentment.
At this point you truly need to accept that you cannot and should not be trying to control her. You can absolutely say something like "you going out makes me feel like xxx." But it should never come across like she needs permission.
Right now, more than any time ever, you need to just let go. If she asks you if she can go out, dont attach any expectations to it. You can tell her "You dont need to ask me for permission". Or just say "have fun".
This not only 180s on any controlling behavior, it helps you detach. Right now she will do what she wants no matter what and attaching expectations after BD could end up in a fight because youre still showing that her behavior affects your emotions.
Right now your mindset should be "shes going to do what she wants, but no matter what it will not bother me because im focusing on myself". Make sense?
M:16 T:21 H(me) 38 WW: 38 S11 D16 D19 Red Flags of A: March 2018 ILYBNILWY: August 4, 2018 Moved out of MBR: September 24, 2018 BD/Confirmation of A: October 31, 2018 D Filed: March 27, 2019