I'd not play games like that - you already had sex with her, remember?
If she expects you to call on particular day because you've set some pattern of calls (ritual), you may be late with the call (like 1 day late tops) but if you will call her with a week-delay, you may already be in the *******-zone in her mind.
Long distance dating has already some obstacles and if she is willing to meet with you and does 1,5 hour trip just to meet with you, interest level is more than ok imo.
I'd view last meeting as a bonding-meeting => clear sign that she might be more into you than you think (dating is a game at the beginning, but women tend to put more effort into not showing their real interest level), I'd say her is high enough to not game her that hard.
imho you are doing good & with solid frame. Call her on Monday to set the meeting, have a 10 mins chat (she will think it should be at least 20 so make it only 10) but don't call her to chat during the week unless she will call you (confirmation call before the meeting is ok just don't make it only about the confirmation, ask question like 'so how's your day?" and receive the answer). if she will call you during the week to talk, chat around 20 mins (additional minutes being reward for her reaching out you) but after 20 mins carry on with the 'being really busy here lass' attitude.
I'm not aware how this dating site you've checked her activity on works but I presume if you can check her activity, she can check yours as well (when you were logged on last time) - I'd stop checking it. I'd say you're already on a good road to make it exclusive with her, so just pass that ****-test (it's self-created ****test really) and ignore it alltogether - either you feel that she may deserve you and you want her 100% so 'make a kill' and organise quality dates with her and have fun OR spin plates - don't try to be exclusive & spin plates because it's against your current strategy.
Strategy: I want one good chick to be exclusive with and she might be the one to be with
Tactic: Stop spinning plates until you will confirm she is worthy to be exlusive with
Strategy: I want to spin plates, that's it
Tactic: Keep spinning plates w/o any attachment
You can always go back to spinning plates, but being a man means also putting yourself in the no-cover zone - now it's the part when you're running out of the cover hoping that covering fire you've organised yourself (interest level/good sex with her) will allow you to reach another objective.
If you are interested in exclusivity, don't talk with her about it, just show the strong frame and act like she perhaps is exclusive already (not in the wuss-manner, no sweet talks etc, have fun with her, spend quality time, no needless overthinking how this will proceed further) if she will ask is there someone else, reply with a question instead of giving straight answer - she should be the one to start this conversation really.
1)Have a great sex with her 2)Have a great time with her (not FOR her, WITH her, I think in the longterm it's more important than point 1) - have honest fun from dating 3)Keep your emotions in control until she will make her decision (it's always woman decision really, so asking about it or overreacting before she will make her mind would be stupid/AFCish)
You're doing fine man. Even if it will not go in this direction, you can always go back to spinning plates and be happy about yourself.
I'd say it's the part in the game when you've already slayed the boss and you're worried if you've enough ammo to finish the level - just keep shooting with a firm arm and you will do it as skills are already there.
Best,
mark