Wouldn't the translation be "the women talk in the library" because there is no 'are' in the Spanish sentence?
Remember that the present tense (indicative) in Spanish means three things.
Tú hablas inglés. You speak English. You do speak English. You are speaking English. Tú comes pan. You eat bread. You do eat bread. You are eating bread. Tú vives en Buenos Aires. You live in Buenos Aires. You do live in Buenos Aires. You are living in Buenos Aires.
There are in English as well. Those translate to them: You speak English and You are speaking English.
What gets most English speakers is that we can utilize the Present Progressive (the 'ing' verb) in situations like this. Spanish does not. So the Simply Present tense in Spanish can translate to either tense in English.
This actually means "The women talk in the library". If you wanted to have the verb as a present progressive, such as "talking", it should be, "Las mujeres estan hablando en la biblioteca". The conjugation for present progressive (verbs ending in -ing) require and estar verb prior to the following verb which will end in either -ando or -iendo depending on the -ar/-er verb.
I thought this would be "los mujeres están hablando en la biblioteca", I would think un English DL's answer would be "the women speak in the library", I know it could sound odd but, context is important, it could be an answer to a question? Like "So when Danielle and Gina meet up and talk, where do they go?", "They speak in the library"