Wow, you are going to go no contact for one whole day? You are blinded by oneitis. Dude, calm down. Why do you need to call her at all? Why do you need to ask her out? Because you are feeling insecure.
Don't call her at all. Let her cook on HIGH for a couple days until SHE is the one to panic; then SHE will call YOU. See how this works? This is how attraction works for women. If they are made to chase you, they have no option but to feel attraction. She will contact you, and when she does, just be happy and fun and light and bust her chops. After ten minutes MAX, tell her you gotta run. This is how the game is played. SHE MUST CHASE YOU. You have to be a challenge! You know this stuff; you've read it a hundred times, but once that tight little ass wiggles in front of you, all the blood in your brain is diverted to your penis and you do silly things and panic. Stay cool and calm. This is why you need to spin plates; you are focusing on one woman which almost every single time ends badly for the man. You need to be playing and dating 3 other chicks right now.
You claim you don't want to screw this one up. Then you better man-up.