Yet her daughter is denying him his own dad!

For those wondering what was going on with those glass containers and the cooking oil in the background, I have your explanation. The glass and oil are nearly identical in what's called their refractive index, making the smaller, bulbous beaker turn invisible when submerged in the oil. This is also why images get distorted when you look at something through the surface of the water, like a fish being a few inches away from where you expect it in the shallows of a lake or river, and why the different colors of light split apart when they pass through certain crystals or raindrops, forming rainbows in both cases.