Are you sure this is a good idea?" 38-year-old Jesse St. James asked his 36-year-old wife, Rachel. The couple was folding laundry. Their 9-year-old daughter, Olive, was in bed.

"I don't know if it's a 'good idea' per se," Rachel admitted, adding a T-shirt to Olive's pile. "But Kurt and Blaine haven't been on a vacation since Maya was three - and I can't remember the last time Maya had an extended stay here," she continued.

"There's a good reason for that," Jesse replied, tossing a towel on the linen pile. "She and Olive almost killed each other."

"Jesse!" Rachel scolded, chucking a pair of socks at her husband. "That's an exaggeration."

10-year-old Maya Hummel-Anderson was the daughter of Rachel and Jesse's friends, Kurt Hummel and Blaine Anderson. She was conceived using Rachel's egg, and Blaine's sperm. Rachel had also acted as the surrogate. Rachel herself had been conceived through an egg donor and born to gay fathers, so Maya's birth story was particularly special.

Just two months after Rachel gave birth to Maya, she found out that she and Jesse were expecting "a coproduction of their own" as Jesse had put it. Olive was born when Maya was 11 months old. The two couples had attempted many play dates with the girls over the years, but the sisters were constantly at odds: as toddlers there was a lot of hair-pulling and toy-taking, and now in the preteen years there was plenty of name-calling and dramatics.

It made Rachel sad that her girls didn't get along like she, Jesse, Kurt, and Blaine did, but she was still holding onto the hope that one day they would be the best of friends.

"Look…I love Maya just as much as you do - even though she's not biologically related to me - she is family. But any time she's over, it really stresses out Olive," Jesse said.

"It shouldn't!" Rachel cried. "They're sisters, Jesse - half-sisters, but sisters nonetheless. I would've loved to have had a sister of my own - especially one so close in age to me. And if she can't get along with Maya when she comes over occasionally - how can we expect her to get along with a new baby who will live in the same house as her full-time ?"

Jesse was solemn. Not at the prospect of Olive not getting along with a younger sibling, but at the prospect of Olive never getting a younger sibling in the first place. He and Rachel had been trying for St. James baby #2 since Olive was 2 years old and…nothing. Both Rachel and Jesse had undergone several tests since then but none had indicated anything was out of the ordinary.

Rachel's eyes started to well with tears - she knew exactly what Jesse was thinking.

Jesse put a comforting hand on Rachel's. "We'll worry about that when it happens - and it will happen - we just need to wait," he assured her. "But as for Olive and Maya…I just don't know, Rach. I would just hate for someone to get hurt on our watch."

Rachel thought back to the time Olive had hit Maya over the head with a shoe. Maya had returned the favor with a slap to the face. It rarely ever got that heated, but ever since then - Rachel, Jesse, Kurt, and Blaine had been on guard any time the girls were together.

"We'll have to watch them like hawks," Rachel said, organizing each family member's laundry pile into their personal color coded baskets.

Jesse nodded. He still wasn't convinced this was going to end well, but it was important to Rachel - and he did still have an inkling of hope that Olive and Maya could get along.

Rachel and Jesse each took two baskets of laundry upstairs, brought them to the respective rooms or closets, gave Olive one more kiss good night, and headed for bed.