The Broad Index is a trade-weighted index used by the Federal Reserve to measure the performance of the US Dollar against a basket of 16 currencies. The central bank created the index as it was viewed that weighting in DXY overemphasized the Euro. The index is not traded, and thus does not carry a ticker symbol.
Yes, her can be an adjective if it is acting as a possessive pronoun. For example, She gave me her coat. Her is describing who's coat it is.
Like a normal adjective, an adjective phrase can be used before the noun it is modifying (like in the first two examples above) or after the noun it is modifying (like in the last example). Here are some more examples of adjective phrases (with the head adjectives in bold):n adjective phrase (or adjectival phrase) is a phrase that tells us something about the noun it is modifying. The head (principal) word in an adjective phrase will be an adjective. In the examples below, the adjective phrase is shaded and the head word (i.e., the adjective) is in bold: