Someone who lives by used to have a dog that coinstantly howled and last nite she moaned at my dog barking?

she said tht he was frightening her daughter as he barked twice toi be let back in after a toilet break surely thats pathetic after she used to go out all the time and her dog would howl and bark all day long, why is it ok for her dog to do it and my dog barks twice and i get all this