Sorry, from what I have seen Staci and Little Roxy (if real) STRONG emphasis on that part, are little girls looking for attention. Their opinions are far from well cooked so they need to simmer for a few more years before a strong suggestion to listen to them is offered.
As far as the OP. I have found that when a man is this concerned (actually man or woman) with "smothering" "stalking" etc. that usually means they have been told this before. My answer to your question OP is YES, my dear you are smothering her. I was gasping for air just reading your question.
Let's look at the facts:
You've been texting for 4 days! In today's age, that means less than nothing. You have never met her and she is a "GEM", how naive are you? She is moving from god knows where and you ask her to text you when she settles in and you have a specific time expectation? Really? If all this is real, that's a MAJOR red flag. I would run! Here's a clue that something is really wrong: You are sitting around watching the clock: 4pm, 8pm...10pm....would it be too cruel for me to tell you to get a life? My apologies if it is.