I went out drinking with a few coworkers of mine and the waitress was an ok HB7 that kept giving me the eye. I left my number on the receipt saying "let me buy you coffee" with my number. I left the bar at about 1 am and our texts went like this.

She seems interested but didn't give an alternative time. Is it beta to text her when she's free? Or just suggest another time like "Let's do Tuesday afternoon" and if she says she's busy again with no alternative I'll just next her?