is my manager allowed to tell her non work people/her friend things related to me ?

my manager asked my friends cousin (her friend) and then my friends cousin asked my friends mom about me missing 3 shifts (for a broken car) because she knew i am close with them and didn’t believe me. can i do something about this? it turned into an entire thing and i feel it was unethical of my manager to do this even if she felt i was lying. she could’ve asked me for some document. is this something worthy of reporting?