She called the police because you called her a homewrecker as you passed her as you were going out of the store and she was going in???
Seriously - you need to A) get a copy of that police report and B) contact the store to see if they have security camera tape. Because if she is claiming something happened other than you just calling her a name, the security cameras will prove it wasn't so - and you may need to threaten her with a lawsuit to let her know she can't pull that kind of crazyass sh!t.
Women like this are dangerous and you need to nip this in the bud. Security tape isn't kept all that long so ask to speak to the store manager ASAP so they don't tape over it.
She must have made SOMETHING up because I can't imagine the cops wasting their time if all she told them was you called her by her name ("Homewrecker") lol.