Just be patient. All good things come to those who wait. You need to take your time with this lady and go slow especially if you want it to work long term. Right now you and her are just friends. You need to meet in person and figure out if there is chemistry between you and whether you have much in common etc and you at least need to kiss her first a few times and hold her hand before you can start being all lovely dovey etc.
You are definitely infatuated by her and that is why you are all excited and smiling and feeling as if you are dancing on a cloud lol. Its okay to feel that way-just go with it but try not to come on too strong.
You can say things like "I'm really looking forward to meeting you and getting to know you better" or even "I hope our date goes well" etc but don't start saying "wish you were here" etc until after you have met and at least kissed.
The fact that she is eager to meet you is a great sign but you will have to wait until you meet her in person to try and read her signals and figure out whether she is flirting or not.
What kind of things does she say in the texts? Has she left kisses at the end (xxx), does she try to make you laugh, does she talk about what she wants in a partner?