A/N: Because... Well it's FanFic land and Anything goes! Have fun with this AU story!
"Peter Dearest, we have an extra guest for dinner, one's sister is in town." Chummy greeted, walking through the doorway.
"Lovely! I'll be delighted to meet her." Peter replied, taking a drink of his tea.
"We are having Irish stew and mash." She said, with a cheeky grin.
"You must really love me." He chuckled, stepping up to pull her into a kiss, that is until Timothy came through the door. Timothy was griping under his breath and slammed the front door, only seconds went by until Shelagh came in heading straight up the stairs. "TIMOTHY, HERE NOW!" She bellowed.
"Uh, oh." Chummy said, in a hushed tone.
"She may be small, but man is she scary." Peter whispered, with a slight look of horror on his face. Patrick came home in only minutes after, following his son and letting the door slam shut. "Timothy!" Patrick yelled as stomped up the stairs, mumbling under his breath.
"I wonder what he did?" Peter said, turning his brow and shrugging his shoulders.
"I don't know, but whatever it was, those two are going to need a cuppa. Possibly spiked!" She chuckled, and the two headed to the kitchen. She poured the hot water into the four cups and added the tea bags, not knowing that Peter had snuck up behind her.
He wrapped his arms around her waist and tickled her ribs, causing an unladylike squeal to emerge.
"Peter!" She said through laughter. "Stop, St...op!" She tried to talk, but was taken over in a fit of giggles.
"Make me!" He said, tickling her harder and faster.
The two quickly stopped when there was a knock on the door frame, there stood Shelagh and Patrick trying not to laugh.
"You two have a room right there!" Shelagh said, in a sarcastic tone and pointed to their bedroom door. Peter flipped around and Chummy quickly pulled down and straightened her dress.
"Sorry…" Chummy said, looking at her feet and smiling.
"No need, only joking chums!" Patrick quipped, as the two sat at the table.
Peter joined them and Chummy sat the cups of tea on the table, and took her seat up too.
"So what did the lad do?" Peter hesitantly asked.
"He got mad and poured his fizz on Mr. Whittaker!" Shelagh's tone turned harsh, and her brow turned to.
"Oh, Dear! How awful!" Chummy sighed, taking a sip of her tea.
"Yes, feel free to give him all the extra chores too!" Patrick added.
"I may take you up on that, we have dinner guests. My sister is in town." Chummy said, standing up and clearing the table.
"Oh, how lovely!" Shelagh quickly said, helping her with the dishes.
The men retired for a nap in the sitting room and the women began cleaning and cooking.
Peter and Patrick had taken to prams and went to pick up the children from Nursery just moments before the Bates arrived.
Chummy opened the door to find the family of four, wide with smiles.
"Isabella!" Chummy said, almost in tears.
"Camilla!" Isabella said, taking her into a hug.
"Come in! Please. Goodness, why didn't you tell me you were expecting!" Chummy's eyes widened in shock.
"So I could see that look on your face!" She replied, with a chuckle.
"Oh, sister Dear, You haven't changed at all!" Chummy said, she introduced her to Shelagh and quickly dismissed herself to change her outfit.
Peter and Patrick had gotten back with the children and put them in the playpen, Patrick introduced himself to Paul and Sat on the settee with Shelagh. Peter walked into the kitchen to see his wife faced away from him, washing her hands.
"That's a beautiful dress on you." He said, before walking up behind her.
"Thank you, it's new." She replied, thinking it was Paul.
Peter walked up and put his hands on her hips giving them a squeeze, and pressing a kiss in between her shoulders. Camilla that perfume is heavenly! He said, in a slow, deep voice as he pulled her close.
"UNHAND ME!" She yelled, Slapping his hands in utter shock.
"Camilla! Ahhh!" He screamed, seeing his wife with a very swollen belly.
Chummy was almost at the bottom of the stairs, "Oh, no!" she said, looking at Shelagh with horror in her eyes.
"PETER, NO!" She yelled, as she ran into the kitchen.
"Peter, did I mention that I have an Identical twin!" She lowered her head and everyone but Peter and herself started laughing.
"No, Dear you didn't. Oh my, I am so sorry." Peter said, his face was burning and he wanted nothing more than to crawl in a hole and die.
"Dear, where is my whiskey?" Peter continued, to his wife.
"Top shelf on the right." Chummy replied, trying not to burst into laughter.
"Thank you." Peter poured himself a double glass and escorted himself to the living room, Paul and Patrick joined him.
"I will never live this down." He said, taking a swig of whiskey.
The ladies began to set the table and prepare the rest of dinner, chatting and laughing as they did.
"Oh, Lizzy he may have to see a doc after that one!" Isabella said, putting down placemats.
"He lives with one!" Shelagh perked, filling the tea kettle.
"Bella Shelagh, Patrick and the kids live upstairs." Chummy replied.
"Oh goodness! That's right, sorry, Mummy brain!" Isabella said, putting her hand on her head.
"No worries! We put a Moses basket and a ready bed in your room for the kids." Shelagh said, taking up her other hand.
"Top of the stairs, third on the right sis." Chummy said, showing her to her room before dinner.
They ate and got acquainted with each other before retiring for Horlicks by the fire.