I understand where you're coming from, but I don't think you understand the temperatures involved here. Stella was burned by 80 deg C coffee. Guess who else serves coffee this hot? Everybody. ALL good coffee shops and restaurants serve coffee in the range of 160 degrees F (71.1 degrees C) and 185 degrees F (85 degrees C). The National Coffee Association informally recommends the higher end of this range, around 80-85 deg C, and McDonalds still serves at this temperature or higher.

Anyone who drinks coffee at shops or restaurants, or makes coffee in a decent coffee maker, has experience with 80+ deg C coffee, and any reasonable person should know not to squeeze a cup of it between their legs while they take the top off, which is what Stella did.