["I quit my job recently, which was great. But I didn't have time to tell my good friend before leaving. I feel so bad now.", 'Im sure they understand. That is a tough position to be in.', "Well she sent me an email checking in. And I responded but I think it filtered to her junk mail, she hasn't responded back."]
Maybe try and reach out on social media to a few of them. Im sure they would love to hear from you.
I quit a job recently. It was really important for me to just get out of that job. However, I wasn't able to tell my good friend before leaving.