I think so too. There is a saying "be careful what you wish for" which may apply here.
I posted this earlier but since you were the one to set these rules (no commitment, see and fvck others), if you now want to upgrade to something serious you need to tell her.
If you had not set those rules, I might agree that she should be asking you to be exclusive but come on man, unless she's a woman with little to no value, or self esteem, she's not going to, not after you set the rules.
She's actually being compliant by following your rules, your lead, your frame, but now that you want more, her compliance doesn't suit you?
You can't have it both ways man.
To clarify, during our first date, I said you should see other people in the beginning (to get contrast and know you're making the right choice), and I never actually brought that up again.
After our 2nd date when we had sex, she was apprehensive - said she wasn't the type sleep around and thought I was only looking for a casual thing. I explained to her I wasn't looking for casual things, but do not like to jump right into anything serious off the bat either. Basically I just said I want it to progress naturally without labelling it and I was actually fairly ambigious because it was way too early to set expectations.
The only thing I explicity said was that,
starting out, we should probably not see each other more than once a week to avoid getting attached and we shouldn't over communicate on our phones. I never explicitly reiterated "let's agree to see other people" and I certainly did not encourage her in any way to do so...I think it was simply assumed based off my earlier comment on the 1st date. For some reason she interpreted all of these things as "rules" even though I did not explicitly state them as such.
So now, I think what is likely going on is she's fed up with me not approaching this subject again. Not long ago she asked me lots of questions about long-term goals/compatibility and obviously was screening me up and was likely doing so in the hopes I'd bring this up again. She is fairly unassertive and a people pleaser. She even at one point mentioned she was afraid to text me more often, because I told her I don't like over communicating with people...clearly did not like these "rules" I setup which I tried to explain were not set in stone, but mostly left it alone.
And I think her recent behavior could be explained in this context: she's fed up with the games and ambiguity so she's pulling some sort of dread game thing to force me to address this.
So yes, to your last comment: I do see your point, I defined it this way, and she's doing what we agreed to. I genuinely think she'll be relieved that I bring this up.