Character Bonds:
The actor playing Mrs Birling would need to show the distancing between herself and each individual character. The bond between Mr and Mrs Birling will be stronger than Mrs Birling with anyone else as they are from the same generation and Mr Birling does all that he can to stay in Mrs Birling's good books (this could be due to the fact of social standings or just to do with the fact that she is his wife). The bonds between herself and her children will be mainly formal with them only speaking about appearances and social activities.
Sybil has embraced Gerald into her family as she perceives that his impending marriage to Sheila can only benefit her family in the future. Gerald is often spoken to in a much lighter tone of voice than the one she uses on her family, including her husband.
The connection between Mrs Birling and Edna would be non-existent due to Edna's lower social standing (with her being working class rather than middle class like the Birling's). Mrs Birling probably won't even look at Edna when she is onstage-she would just be ignored and never thanked. Communicating with Edna will be with singular lines and hand gestures to indicate things that need doing. The actor would have to remember that she is prejudiced against the working class people and as Edna is the only working class person we really see, other than the inspector, there would be a need to show and see this prejudice directed completely at Edna.
Mrs Sybil Birling speaks to the inspector in a very similar way in which she would speak to any working class person of the time period. She doesn't believe that the inspector has any right to know her business and tells him this when he begins questioning her about the death of Eva Smith/Daisy Renton/'Mrs Birling'.
It is Sybil's injured pride through the 'impertinent' misuse of the Birling name by the now pregnant Eva, that provokes her vindictive decision to persuade, using her influence, the other members of her 'charitable' group to refuse Eva assistance. She never appears truly convinced that her 'little boy' could be the father of this child and never seems to feel remorse about what happened to the girl after she met her.
Character Traits:
The actor that takes on the role of Mrs Sybil Birling will need to portray that she:
- is even more hard-faced and arrogant than her husband.
- is very snobbish, conscious of and uses social position to try and intimidate
- expects other to respect her, her opinions and defer to her
- resents being contradicted, even when caught lying by the inspector
Mrs Birling would hold herself with a certain pride in her appearance. Her shoulders would be pushed back to show this and she would never be seen slouching-even during her interrogation from Inspector Goole. Her hands would mainly remain curled on her lap when she is sat down but would move to smooth her dress during 'awkward' moments. Her mannerism's would have an aggressive edge to them and finger wagging will probably be added when she is talking to her children and maybe to the Inspector when she is defending herself during the questioning.
Her head movements would probably change from being quite slow and graceful, when talking to her husband or to Gerald, to violent when talking down to someone whom she finds 'impertinent', most probably Edna and the Inspector. When she talks about her meetings with Eva Smith/Daisy Renton she shows her agitation about being asked questions that she doesn't think are necessary to the situation at hand. She would also portray the resentment she feels towards that character from the said meetings.
In Summary
Sybil Birling is a terrible social snob who takes little interest in those she believes to be her inferiors and even though she holds a high position within her 'charitable group' she displays very little consideration for others from outside of her social equal.
She would stand erect and proud and attempt to belittle anyone that she considers a threat to her standing.
An actor taking on the role in a theatre production would be suited by being tall and well spoken with an excellent command of the English language as well as remembering that this woman has very few likeable character traits.