These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Periphery Demographic: A sizable portion of teens and adults enjoy it for how surprisingly clever the writing is.
Squick: Martha eating and rolling around in garbage. Also, in one episode she claimed to be rolling around in dead snakes.
The Woobie: Some episodes depict Martha in this fashion, such as when she believed she'd been cursed with bad luck, leading her to run away from home. Sure, otherwise she's happy in most episodes, but when she's suffering, she does so beautifully!