Former employer keeps looking at my LinkedIn profile: Should I be worried?

I resigned a position after a year in mid-December. My then-employer declined to let me work through my notice period, so I my employment with the business ended then.

In the ensuing three weeks, my ex-boss has looked at my LinkedIn profile at least twice. I changed my privacy settings after the first time in late December so that only first level connections could see any details. This afternoon she looked once again.

Should I be worried? What would a former employer care what I'm doing now? Do you have any suggestions beyond what I've already done? I would hate to give her more attention by blocking her from seeing anything at all.

Thanks for your time.

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