A girl not making the time to go out ?

Long story short, meet her at an event, we clicked, and exchanged numbers with her hopes on going on a date together.

I let her know I’m available so and so days and she let me know she’s only available on Sundays.

Nothings wrong with my texts, already gone over them with some buddies, but she is just non-commitive. I already tried setting something up 3 times and her initially asking me out once, but now I’m setting my boundary and send a message to something along the lines of, “hey we had fun, but now I’m not so sure about you anymore. If you want to work it out, feel free to stay in touch. If not, that’s cool too.”

Any ideas ?

Or... just go radio silent and see if she gets the hint ?