Hi. You have not informed the play to which these questions refer, which makes it impossible for it to be answered. However, I will try to help you as best I can.
To answer these questions you will need to read the play and understand the personality of each character, through the actions they promote within the story. Amanda will be a good mother if she is someone who promotes good things for her son and tries to protect him, even if she fails in that attempt. In short, Amanda Will be a good mother if she has no intention of harming her child, even if she does so unintentionally. Tom will be an unfaithful man if he betrays people's trust, or his own trust, by acting incorrectly, breaking promises, and any other activity that promotes infidelity.
The different definitions of happiness cause these characters to conflict because they don't understand one or the other, or because the happiness of one inhibits the happiness of the other. During the reading, you will need to identify how this is established.
