Synopsis
Make sure there's a hanky nearby: After the death of their mother, older sister Betty works tirelessly, supporting her sister through nursing school and her fiancée through medical school only to see her happiness shattered when her sister and fiancée fall in love.
You might also like

Two aged sisters reflect on life and the past during a late summer day in Maine.
The Whales of August

Two sisters are trapped under the fiberglass cover of an Olympic sized public pool and must brave the cold and each other to survive the harrowing night.
12 Feet Deep

A young girl irrevocably changes the course of several lives when she accuses her older sister's lover of a crime he did not commit.
Atonement

Medical-school dropout Wallace has been repeatedly burned by bad relationships. So while everyone around him, including his roommate Allan, seems to be finding the perfect partner, Wallace decides to put his love life on hold. It is then that he meets Chantry, an animator who lives with her longtime boyfriend Ben. Wallace and Chantry form an instant connection, striking up a close friendship. Still, there is no denying the chemistry between them, leading the pair to wonder, what if the love of your life is actually your best friend?
What If

Five unmarried sisters make the most of their simple existence in rural Ireland in the 1930s.
Dancing at Lughnasa

Maureen Trant and her younger sibling Dani share a strong connection, but local boy Court Foster threatens to throw their bond off balance. Dani and Court meet first and have a flirtatious rapport -- but when he meets Maureen, he falls hard and they begin a passionate affair. The new couple try to keep their love hidden from Dani, but she soon learns the truth, disavowing her sister. But a heartbreaking accident later reunites the girls.
The Man in the Moon

An unhappy, self-centered woman runs off with her sister's husband, wreaking havoc and ruining the lives of those around her.
In This Our Life

Ramona is a little girl with a very big imagination and a nose for mischief. Her playful antics keep everyone in her loving family on their toes, including her older sister Beezus, who's just trying to survive her first year of high school. Through all the ups and downs of childhood, Ramona and Beezus learn that anything's possible when you believe in yourself and rely on each other.
Ramona and Beezus

A former vaudeville child star viciously torments her paraplegic sister in their decaying Hollywood mansion.
What Ever Happened to Baby Jane?

Iris invites her friend Jack to stay at her family's island getaway after the death of his brother. At their remote cabin, Jack's drunken encounter with Hannah, Iris' sister, kicks off a revealing stretch of days.
Your Sister's Sister

Two high school girls are best friends until one dates the other's older brother, who is totally his sister's nemesis.
The Edge of Seventeen

Altruistic Jane finds herself facing her worst nightmare as her younger sister announces her engagement to the man Jane secretly adores.
27 Dresses

When New York attorney Gordon Hocheiser meets Louise Callan, the girl of his dreams, he schemes to eliminate his aging, senile mother, even though he promised his late father that he'd always take care of her. He fears that his batty mom's eccentricities will shortly lead to Louise's departure.
Where’s Poppa?

A leukemia patient attempts to end a 20-year feud with her sister to get her bone marrow.
Marvin's Room

After the death of her husband, the mother of Julie, Jack, Sue and Tom begins to suffer from a mysterious illness. Aware that she is going to have to go into hospital she opens a bank account for the children, so that they can be financially self-sufficient and will be able to avoid being taken into care by the authorities. Unfortunately she also dies and Julie and Jack (the older, teenage children) decide to hide her body in the basement so that they can have free reign of their household. Soon Tom has taken to dressing as a girl whilst Sue has become increasingly reticent, confiding only to her diary, meanwhile Jack and Julie sense an attraction developing for each other. However Julie's new beau, Derek, threatens to unearth the many dark secrets within this family as he becomes increasingly suspicious of Jack.
The Cement Garden

A sister and brother face the realities of familial responsibility as they begin to care for their ailing father.
The Savages

A college freshman cures her disappointment and loneliness by allowing herself to be pulled into the wacky schemes of her future stepsister.
Mistress America

An intimate family portrait of four hapless but resilient women and the bittersweet lessons they learn in keeping up with the hectic demands of their individual neuroses. Each of the women seeks redemption in her own haphazard way, but whatever salvation they find is illusory and short-lived.
Lovely & Amazing

When Ruby and Rhett's parents are killed in a car accident, their carefree teenage lives are suddenly shattered. Moving to an incredible house in Malibu with the Glasses', old friends of the family, seems to be the beginning of a new life for them.
The Glass House

After some years of tension, Richard begins a sexual relationship with his sister Natalie. Now married, the relationship proves dangerously obsessional.