“I’m… I’m fine,” Jennifer managed through gritted teeth, though her knuckles were white where she gripped the armrests. “It happens sometimes. Just… give me a moment.”

The spasm lasted perhaps ten seconds, but it felt like an eternity. When it finally released her, she slumped back against the wheelchair, gasping for air, sweat beading on her forehead despite the cool weather.

“How often does this happen?” I asked gently, crouching down beside Theo.

“More and more frequently,” Theo admitted, his voice thick with helpless frustration. “At first it was once a week. Then daily. Now…” He swallowed hard. “Now it’s several times a day. And each time, they seem to...