I like her, she likes me but doesnt want to because of distance?

so i live in albert lea and this girl i really like livesin marsahll. three hour drive. she liked me last week but all this week shes been telling me that she cant like me because of the distance, what should i do? i havent askedher out yet but i have told her how i felt but it was over a voicemail. i feel like i really screwed the pooch. help please what should i do?