Is she really busy or just pretending?

Been on a date with this girl we spent mayb 5 hours together. There felt good vibe. She even offered me to drive me to my car. We met on tinder we both work maybe 15mins not that far from each other. First date very good she seem interesred for second time she invited me to go for a walk on a brake on her roftop. Well of course the first one was better, but i didn't expected nothing from 30 minute walk during work time. We kept talking after the second meeting for 4 days the chat seemed okey nothing chnaged. Only when i offered for a thirs date she said she has to check to her schedule she showed me on her phone. She is pretty active i won't lie she leads dancing classic, sings in vhoir, exercise in gym but when i offered to meet she said will let me know at the end of week but than she didn't mentioned nothing about it and at the end of week she stopped replaying. So after 4 days i messaged her. The chat seemed similar she even liked my facebook story, but our chat ended by me offering her to go for a walk on her brake. She just said that she is not yet in the office and she has to cover or do also her colleaguse work and but a laughting face and she might be busy. I wrote her its all good when your free she didn't replayed and dint checked my message. What do you think?

Is she really busy or just pretending?
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