Is this a rejection or she is playing games?

Hello dear community hope that you are doing well :)
I've known a girl at my university for a while who was very nice and kind to me. She would walk pass me and say hi with a smile! This happened like 3 times and since she is studying another major we don't have any common modules so we didn't have any interaction before I talked to her twice and it went well!
As I told you we don't study the same major and I had not seen her for while so I decided to dm her. I told her that I like her but since I'm shy and I don't see her too often I decided to text her and I would like to know her better etc and asked her out.
And this was her reply:
Hey thank you for asking currently I'm very restricted and I can't date anyone but I appreciate your honesty and I hope you are doing well.
Now my question is what is she on about?
Is this a rejection? Or she is playing games? I'm so confused because she was the one who initiated the interaction at the first place.
Is this a rejection or she is playing games?
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