It's a red flag in terms of difficulty to cut her, and a green flag if you're looking to cuff her.
Let me elaborate,
If she swiped right, it means your pictures pass the test.
If she automatically gives you the number - she's made getting with her much easier.
If she wants to text on the app, it means her interest in that moment, is higher than 1 and lower than 10.
If she's young and cute, expect that interest to fall off rather quickly. If she's grown and sexy, the attraction half-life is longer.
With that in mind, it's also key to understand the nature of the medium. Be it the app or text messaging, the medium does not favor the average man, and the average writer at all. So by choosing this medium, she's making her own happiness an uphill battle.
So The key is not to read much into this, other than just for a brief moment in time, the Stars aligned. So don't put too much energy into this and keep trying to contact other chicks.
