Will that be a good enough hint that I am interested?

Dude... take the freakin chance. Tell her that you like her, what do you have to lose? Tell her something like 'I really wish that I could have had more time to get to know you better' or ' can I take you to dinner before you leave?"... you need to let her know or you'll be kicking yourself for not doing so. Nothing ventured nothing gained... tell her how you feel.