Why she stopped texting me?

I used to work at a company and I had crush on my coworker and she had feelings for me we spend hours talking and spent time after work we didn’t texted at all because we always speak face to face we felt that we have chemistry. however, I received a good job offer at a big company and quit my previous job till my last day we had talked for hours after I quit my job I texted her and she was bit not interested and answering with one word only and take time to respond and I texted her again same thing. So I stopped texting her because I felt offended also I feel she doesn’t care anymore, one day I saw her in town and she did her best not to see me and it was so obvious. please tell me what I did wrong and why she stopped talking to me
Why she stopped texting me?
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