Where do I start?

I've been doing yoga for a couple of months with the sole intention of picking up an instructor. I finally found the one I wanted to go after and started flirting with her before and after class. Turns out she is a year older than I and graduated from the same college that I did. I went to her class a couple of times and got tons of IOIs. Full on massages in class, literally every time I would go to one of her classes she would bare minimum give me a rub down. Sometimes when no one is watching, but usually when they are.

I finally mustered up the courage to truly approach her and tell her I was having a party. I gave her my number and said that if she wanted to come she should give me a call, she gave me her number without me even asking. She didn't show up to my party, so I didn't call her. I go to one of her classes a couple of days later and she sends me a text thanking me for coming to her class. My text game sucks and eventually she stopped texting me back, hindsight is 20/20.

I go to another one of her classes several days later and the IOIs keep coming in, full blown massage during class. I'm a super sweaty dude, so I took this as a good sign that a girl this hot is willing to rub me down. (I try and pay close attention to who she touches and it's me or women, no other men) After class I told her we should get together and asked when she was done with her other job. I said I would call her later, like an idiot I texted her before I said that I would call her. She never responded, I didn't text her back.

I went to a couple more of her classes without showing any interest in her, the IOIs and back massages continued. I quit going to yoga and on my last day I told her we should get together sometime, she agreed, I said I would call her. I called her a couple of days later, today. I was planning on asking her out to coffee on Friday, but she seemed very interested in what I was doing tonight. I had plans, she told me to call her after. I called her, she didn't answer and I left a stupid ass message.

Just like the movie hitch, I need to close this girl. I want more than just a lay, I would go the distance with this one. F close would be sufficient though. Looking back, I see that my game completely sucked.

I'm thinking I need to text her "I'm going to be at X coffee shop getting coffee at x time and that I would like her to join me. If I don't hear from here I am going to assume she is either going to be there or has no interest in being friends"

In general, I don't really know how to handle this situation. I've literally never had a girl show this much attraction to me before and then completely shut me down. I know we all want to close a yoga instructor and I'm so damn close. Any advice would be greatly appreciated.

First, let me know what you think about my text I will send. Second, tell me the best way to close this one. I've never wanted to close a girl this bad in my life.