DD1 loves theme parks. She has sensory processing disorder, and I am sure the vestibular input from rollercoasters gives her a thrill.
She can’t queue due to severe life threatening epilepsy. Inactivity and boredom are a trigger for seizures. She can just fall down unconscious and suffer fractures, broken teeth and soft tissue injuries at any time. It’s caused her to regress to the level of a 2 - 3 year old. Basically she needs to be kept on an even keel - not hungry, bored, tired, in pain, having a menstrual cycle, etc. It’s exhausting just managing her life to reduce the number of seizures (and that’s 2,000 a year after all that trying to second guess the epilepsy).
Considering how limited her life is - no university, job, long term relationship, children, home of her own, independence (because she needs 1:1 supervision all her waking hours, and 2:1 in the community as it’s so stressful for the carers), and she’s aware of what she’s lost, then she’s often in tears. She cannot come to terms with it.
Frankly, I would far prefer her to have a normal life, because a RAP or a Motability car in no way, makes up for what she’s lost in life!
How would you motivate her to keep going in life and not sink into depression all the time OP, when it’s at the back of your mind every day “She could die today, or in the night?”