AITA for not letting my sick sister have what she wants?

A 16-year-old girl refuses to be a private tutor, maid, and real estate agent for her half-sister, despite her sister’s life-threatening cystic fibrosis. The father demands that the poster quit her job, cancel her babysitting contract, and hand over her tablet—all to appease the younger sibling who has bullied her for years.

What complicates the story is how the father rewards tantrums while punishing limitations. Previous promises, such as a 16th birthday party, have vanished when the ailing sister protests. Now, the illness has compounded complacency, leaving the poster branded as selfish for protecting her time and property.

‘AITA for not letting my sick sister have what she wants?’

The family structure shifted when the half-sister entered the picture.

Jade’s chronic illness coexists with consistent cruelty toward siblings.

Current demands escalate as Jade seeks tutoring and the poster’s tablet.

Chronic childhood illness can distort parental judgment into overindulgence. The father, haunted by infidelity and fear of loss, sees Jade’s survival as an endless blessing. But tolerating cruelty doesn’t teach her any coping skills for the decades she could live—modern cystic fibrosis expectations are now as high as 50.

Opposing views resonate with the fear of death in children. Complicating matters is the father’s guilt-driven favoritism that alienates his other daughters. “Parents who overcompensate for a sick child are 78 percent more likely to develop long-term behavioral problems,” reports Dr. Sarah Johnson, a pediatric psychologist at Boston Children’s Hospital (source: Journal of Family Psychology, 2022). Professional tutoring, loaned equipment with contracts, and therapy for all siblings prevent the spiral of resentment.

Society at large is grappling with “sick privilege.” Boundaries are not accidental; they are a reflection of self-respect. The poster refuses to protect her mental and financial health—essential for any future caregiving role she may freely choose.

Take a look at the comments from fellow users:

Users unanimously support the refusal while condemning the father’s parenting.

A few offer CF-specific insight and urge perspective without obligation.

Light comments highlight absurdity of the demands.

The poster stands firm against becoming her half-sister’s unpaid aide, citing years of bullying and broken promises. The social network agrees illness does not license cruelty or erase boundaries, placing blame squarely on the father’s enabling.

Has a sibling’s illness ever skewed family fairness in your home? Would you loan possessions to someone who previously destroyed them? Tell us below.