Is this a shit test?

Been talking to a girl for a couple of days and she said it's only next week that she'll be back in town. I replied with a soft close "we'll have to sync for our date then" and she said "oh you're already making plans niceeee". I feel like this is said in a sarcastic way or might be a shit test I don't want to look dumb or needy what should I say now I feel stuck a bit?