Mixed Signals what should I do?

So i’ve known this girl for like 5 years and we’ve become really great friends. Dont get me wrong she’s gorgeous to me and tell her that in like a jokingly/flirty manner and she reciprocates it right back calling me handsome and whatnot. We don’t text much but when we do text we hangout in the end. People see us and say aww you guys are so cute together and most of the time she doesn’t deny it she says thank you. Other times she claims im her friend which is cool im not pressed about that at all. My issue is recently for my bday I got a hotel to just have a good time for 3 days and one of those days of course she came to hang out and celebrate cause i asked her. The next day i tell her im hanging out with someone else at my hotel which she was cool with. So the other chick comes to my hotel spends almost the whole day with me but my friend does something odd. Out the blue she texts me “hows it going? Are you two having any fun? 😁”. I text her back like an hr later saying we’re having a good time and she never responded but the day I left the hotel back home she texts me have a safe drive. What exactly was that? Is she trying to give me subtle hints? Was her jealousy showing or was she just being a friend checking on me?
Mixed Signals what should I do?
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