Sorry if I'm being picky but quotes from the play should be given line numbers, not page numbers. Also I think the wording of your topic is a little unfair as everyone uses translations of the play and different translators might express this line slightly differently. This can be unnecessarily confusing if you're trying to identify which character is being quoted here. I'm assuming this quote is from the Chorus (line 684-5), responding to Andromache's resignation that she will never again be happy.
So, in your essay you're looking for three main points to discuss - three examples of response to suffering from conflict. In general, all the women are victims of the Trojan War (Helen maybe less so?) but their responses vary. Cassandra sees her suffering in a wider context, that her own death will be a minor part in the murder (and punishment) of Agamemnon on his return to Mycenae. Andromache is a war widow due to the death of her husband Hector but her suffering continues with the taking of their son Astyanax who she's now powerless to protect. She is also uncertain about her disloyalty to Hector when she is married to the son of his killer. You could use Hecuba's suffering for your third example. Alternatively, you could explore the historical context of the play and discuss the real suffering of real people in 415 BCE in Athens war with Sparta and Euripides ability to connect aspects of the traditional stories of epic poetry with real events familiar to him and to his audience.