If she's irritated then let her come to you. If you take too long, however, she could move on to someone who's gonna pay her attention. You definitely don't want to come off as desperate or needy again though, so if you message her WAIT FOR HER TO REPLY before sending another message. There's a very fine line - you gotta give her attention but don't smother her. You got show her you're interested but not desperate. Best of luck!