I [23M] recently went out on a date with a close friend [20F] and they ghosted me. Need advice and thank you very much.

TDLR; Going out with close friend and she stopped responding.

Usually im good with this type of stuff but with this im lost. Recently me and my best friends sister started going out, before this we've know eachother for years and were close friends. I've had a feeling for awhile shes liked me and for a while ive liked her and finally I decided to ask her out, she said yes. The first date went great, and the second we just meet at target and when shopping because she was tried after work and had a bad day. After we talk for a while in the parking lot, I gave her flowers and kissed her, she didn't pull away and seemed genuinely happy and joked about how long shes had a crush on me and we planned together to go out again on Thursday (in three days). Next next morning I asked her "Forgot to ask if that made your night any better?" And I got no response then Thursday came around and I asked "So still got time for me too see that pretty face of yours today?" And again no response. So I decided to wait until she messaged me back before making another move but that was three day ago and still nothing. Im genuinely lost, usually if a girl ghosted me like that I would just drop her because I find that disrespectful but with her theres more behind the relationship genuinely like her and care for her so im worried I may have done something wrong. I think I should wait until she contacts me and give her space to figure out whatever she's thinking or incase shes not interested but its all ive been able to think about the past week. Ive thought about called her to ask if she's alright I want to give her space and dont wanna seem desperate.