Form field adding \' on sumission

When I write something like " Let's go " on any of my text fields, they're being saved as " Let\'s go " on the DB. I have tracked this string being like this already in the BeforeValidation event in the Form object that receives it. What am I missing?

Here's an example of the field definition in the form object for one of the problem fields:

    //ABOUT
    $about = new Textarea("about");
    $about->setFilters(array('trim', 'striptags'));