Question

Is it possible to call directly from a model method from another model of the same component?

Is there any default Joomla option to call in such a way.

Answer 1

Yes You can

It will not break MVC architecture,

You can check like this

if(!class_exists('VirtueMartModelUser')) require(JPATH_VM_ADMINISTRATOR.DS.'models'.DS.'user.php');

            $usermodel = VmModel::getModel('user');

            $currentVMuser = $usermodel->getUser();

First you should include the model file in the required model then create the object.
then call like above.
This example is Virtue-mart using method