IIRC you have to go jogging in the park. It's pretty much the same as Aria but with jogging.
Is there a specific time or an amount of jogging you need to do? Because I've tried it a few times before and she's never shown up for me. But I'll try different times of the day and see if she shows up, thank you :)
Edit: IT WORKED THANK YOU, I didn't realize it was literally first thing in the morning