These are expressions used by ladies belonging to the upper echelons of society. The style is exaggerated in anime and manga and is actually rarely used by such ladies in real life. This character's world in the anime/manga setting is usually centred around her family, with everyone else being treated as the 'lower classes'. Of course, as part of society's elite she always uses polite, refined expressions with 「desu, masu, gozaimasu」 at the heart. However, the actual content of her speech is often instructions and orders dished out to her underlings. Expressions ending in 「～te」「～shi」 and 「～koto」 are characteristic of the elite lady.
