Integrating 3rd Party MongoDB Models with Spark

I'm currently using a third party package to allow Laravel to use MongoDB as its database (https://github.com/jenssegers/laravel-mongodb) This required modifying the inheritance of many classes from the default Illuminate\Database\Eloquent\Model class to Jenssegers\Mongodb\Eloquent\Model. All of my models are extending this new class and the database is functional. I've seeded the database and can successfully query the models through php artisan tinker commands.

My problem now is that when I attempt to log in to my web app as a dummy user I seeded, Spark takes my model class that extends the Jenssegers\Mongodb\Eloquent\Model class and treats it as an Illuminate\Database\Eloquent\Model object. This ends up using an Illuminate\Database\Query\Builder object which causes the query to fail because it's attempting to use SQL. Is there something about Spark that is overriding my models to treat them as Illuminate\Database\Eloquent\Model objects? Is this something that can be configured? I can't seem to figure out why the object is changing classes.