Learn Swedish: Vad gör hennes kollega idag? - What is her colleague doing today?

Unlike min and din, which change based on the noun (like mitt or mina), third-person possessive pronouns like hennes (her), hans (his), and deras (their) never change form. You use hennes whether the following noun is an en-word, an ett-word, or plural.

The translation says 'is doing', but the Swedish sentence just says gör. Why is there no word for 'is'?

Swedish does not have an 'is doing' (continuous) tense. The simple present tense verb gör translates to both 'does' and 'is doing' in English. The context tells you which one sounds best.

Why does the verb gör come right after Vad instead of after hennes kollega?

This happens because of the Swedish V2 (verb-second) rule. In a question starting with a question word like Vad, that word takes the first position. The verb gör must be in the second position, so the subject hennes kollega gets pushed to the third spot.

How is the letter 'g' in gör pronounced?

Because 'g' comes before the vowel 'ö' (which is a 'soft' vowel in Swedish), it makes a soft sound. It is pronounced almost exactly like the English 'y' in the word 'yes'.