Is a manager or supervisor allowed to call you an insulting nickname and laugh?

About 4 months ago my then supervisor (now manager; she got ascended last month) caught me briefly giggling by myself. I was remembering a comedy from a movie. Ever since, she won't stop calling me ''Loca''. She doesn't greet me by my name.

Loca means crazy girl. She laughs whenever she says ''Loca how are you''? I don't like it at all. I have a name and it's not Loca. I haven't done nor said anything due to the difference in power but are they allowed to call you an insulting nickname you don't like?

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+1 y
She calls me Loca in front of others too. When saying bye to everything, she says ''Bye Loca''. I hate it.
Is a manager or supervisor allowed to call you an insulting nickname and laugh?
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