Yep, I have to agree. A) You're an awesome mama! And B) She's used to a particular response and that's what she's getting. Until that response changes (and stays changed) she'll continue to respond in the normal way.
I don't want to imply that you've done anything wrong, far from it! But you yourself said that she's a child that thrives on habit. That makes me think that the habit of making noise to get you to come in is simply that. A habit.
They say it takes 20-30 days to break a habit. I know that sounds like far too much when you're sleep deprived and you just want her to stop but if you follow the advice you've been given here hopefully you can overcome it a bit more quickly.
So if it were me I'd just continually walk in, tuck her back in. Give her no interaction as that's what she's after. Don't talk to her, don't make eye contact. Just very firmly and lovingly tuck her back in and walk back out. Eventually she'll get the hint that bed time is time to be in bed and sleep. It may take many many tucking-s in, but hopefully you'll get there .