What did she mean by “I’ll get back to you”?

So this girl, who I don’t really know but I’ve seen around and I’m pretty sure she’s noticed me, messaged me the other night. And we exchange numbers and talk for like 2 days back n forth. Then I sense it getting dry so I decide to cut the conversation but along with that I asked her in a date this upcoming Friday. To which she repsonded “Okay sounds good and I’ll get back to you😌 but it sounds fun😊 have a good rest of your day!” not sure what to make of it. Note the first time asked this question everyone said she has to ask her parents and asked about age, she’s 21 and I’m 20.