Sister Evangelina: Constable Noakes, would you like to take Nurse Browne to the pictures on Saturday?
Peter: ...yes. Yes, I would.
Sister Evangelina: Nurse Browne, would you like to go?
Chummy: ...yes, very much.
Sister Evangelina: Excellent. I'm so pleased for you both. Now I can enjoy my cake.
Almost anytime Sister Evangelina uses her blunt personality to take care of a situation.
When Trixie goes to deliver a baby, the patient's sister doesn't approve of her modern medical techniques and keeps trying to interfere. When the sister demands to know who sent for a midwife, Trixie cheerfully says "No one. We operate purely on telepathy!"
Any time Sister Julienne thinks someone is an idiot, but can't say so. God bless Jenny Agutter!
Sister Evangelina being volunteered for crowd control during a free medical examination hosting, and by Sister Monica Joan no less! Sister Monica Joan makes her decision on the basis that Sister Evangelina's voice is "reminiscent of a foghorn". (Which... is a rather apt description.)
Sister Evangelina getting Crazy Cat Lady Mrs. Jenkins to warm up to her... by farting loudly over and over again.
And earlier in the scene, when Mrs Jenkins decks her when she tries to take her pulse (after berating Jenny for being unable to do so):
Sister Evangelina: *taking notes* Pulse attempted. Patient demonstrated a strong right hook.
When Chummy comes back to Peter after she'd been pressured by her mother to break off their engagement, she proceeds to "turn herself in for criminal cowardice and robbing two people of something that would make them both very happy." She then tells Peter "because underneath this raincoat, I am practically naked" and they start making out. Two scenes later, Chummy is talking on the phone to her mother, discussing her wedding plans.
Chummy: You may take me to Norman Hartnell, where you can buy me a skirt suit. Preferably Crimplene.
Lady Browne: *through gritted teeth* Will it be white?