I reckon you fucked up by asking her to be exclusive.
Everyone's different and you know what you like and don't like better than anyone else, and I respect that.
But in my experience there's no need to be 'exclusive' with a girl to get any of the supposed benefits of exclusivity.
Being together doesn't guarantee that she won't fuck other guys.
The most you can do is be her best option and get her to fall in love with you and so addicted to your cock that she doesn't feel like fucking other guys...for a while.
Exclusivity also adds all kinds of feelings of obligation and hidden resentments.
And crucially, it's bad for your mojo!
Fucking a lot of new chicks is mojoline; it fuels your masculine vibe.
Why would you want to cut that off?
Because when things go south with this girl you'll be coming back into the game feeling retarded.
Player skills aren't like riding a bicycle.
They're like lifting weights.
You stop; you get weak.
And then coming back is harder than you remember it.
From the girl's POV, a chick needs to feel that her man is desired by other women.
She needs to feel some mystery and challenge like "why can't he just be with ME?"
I just don't see any benefit in exclusivity whatsoever.
You wrote that you feel like she has the upper hand.
Of course she does!
You gave it to her by ceding your freedom in order to just be with her.
And now, judging by your American flag there, she's bored.
"Sigh...another sucker wrapped around my finger. I wonder if there are any hot guys on Tinder right now...?"
4 hours later you get your text response.
A riddle for you: how do you get out of a rear naked choke?
You tap (or go to sleep). Because you fucked up long ago.
Likewise, I believe it's better to scrap the whole thing and start over (not even joking).