I approached a girl today at the train station and told her she was pretty, she then blushed hard and we started talking so i thought it was a sign of interest. Then we came to talking about our age (im 21 she is 17) so it wasn't really sure if she was old enough for me but i still asked her for her number. She then told me her parents wouldnt allow it, didn't really ask why just said to her she could sneak out (in a playful manner). After that she said something but I couldnt hear her, so i just told her have a nice day and she said maybe we'll meet again. My question is now should i have been more stubborn going for the number or was it right leaving? Any other tips for the situation are appreciated. (Also don't know which flair is suited for this haha)