Ladies and Bros....Should I turn to " Stand-offish Mode " because she seem less interested?

If you like her, tell her you'd like to see her again, and ask when you can come by, make the effort to see her, she may feel like she's the only one coming to see you all the time. If she gives you an actual date and time, that's a good sign. However if she gives you the run around, she's over you and has moved on to someone else, or you bore her.