My 13yo daughter was born with hydrocephalus (“water on the brain”). I realize it’s different from what you are describing, but it affects my DD’s brain, neck & right side (significant muscle weakness). She’s got a shunt, and is not a risk-taker by nature.
I talked with her neurologist about planes & rides, and we started slowly. On our first trip (to DL- 5 yrs ago), we were very careful. The wildest ride she went on was Radiator Springs Racers- and she loved it!! Once we started going to WDW, we had limits in mind, but she normally said no to a “questionable” ride before we had to. If she couldn’t see a ride, or was unsure- she’d ask us. If we were unsure, we’d let her make the decision. If anything hurt her neck, she’d let us know.
Of the 3 you mentioned, we only said no to BTMR- it’s soooo shaky/bumpy & whips a little more. We tried SDMT first (bc it’s so smooth & on the shorter side). It went very well, but kinda pushed her limits… I don’t think she’s felt confident enough on roller coasters to try SDD yet, and I think a stronger neck would be good before she tries it anyway.
There a ton of rides & activities that she loves to do though!! She loves Frozen, Soarin’, Remy, MMRR, Rise, Alien’s SS, Toy Story Mania (a family favorite), Aladdin’s magic carpets, Peter Pan, Na’vi river journey, Kilimanjaro safari, the shows, parades, meet & greets, etc.
ps- I’d also recommend talking with your daughter’s dr, if you haven’t already. It really eased my mind & allowed me to let her make more decisions.