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The bathroom door swung open wider under my shoulder, and the world inside that room stopped behaving like a normal home.

Steam rolled out in thick waves, blurring the edges of the tiles and turning the air into something heavy and unreal. The exhaust fan hummed overhead, but even that sound felt distant, like it belonged to another house entirely.

Mark was frozen.

Not startled in the way someone is when their privacy is interrupted.

Frozen like someone whose carefully built structure has just been exposed to daylight.

The kitchen timer in his hand kept ticking.

So did my heartbeat.

Sophie was still in the tub.

Small. Curled inward. Her fingers gripping the edge so tightly her knuckles were pale. Her eyes flicked between me and Mark, as if she had been trained to wait for permission to exist in the moment.

“Mommy—” she started.

Her voice broke immediately.

That sound did something to me that panic never had before. Panic is loud. This was sharp and quiet, like something inside my chest had been cut cleanly.

I stepped forward.

“Get away from her,” I said.

My voice didn’t shake. That scared me more than anything else.

Mark stood up slowly, keeping one hand visible, the other still holding the timer.

“Don’t,” he said softly. “Don’t do this like this.”

“Like what?” I snapped. “In a locked bathroom for over an hour every night?”

Sophie flinched at my tone.

I saw it. I saw it and it broke something in me immediately.

I forced my voice down.

“Sweetheart,” I said to her, “you’re safe. You don’t have to stay in the bath if you don’t want to.”

Her lip trembled.

“I’m supposed to finish the game,” she whispered.

That word again.

Game.

Mark exhaled sharply.

“This is exactly why I didn’t want you finding out like this,” he said.

I laughed once, but there was no humor in it.

“Then explain it.”

Silence.

The timer ticked down another second.

Then another.

Mark set the cup down on the sink very carefully.

“This isn’t what you think,” he said.

“That is what every person says when it’s exactly what I think.”

Sophie started crying quietly now, not loud sobs, just small broken sounds like she was trying not to make trouble.

I moved instantly to the tub, lifting her out.

She didn’t resist.

She clung to me like she had been waiting for permission to do it all night, every night, maybe longer than that.

I wrapped her in a towel from the rack.

Not the hidden one.

A clean one.

Mark didn’t stop me.

That was the first thing that made my fear shift into something more complicated.

If he was guilty of what my mind was building, he would have stopped me.

Or tried.

Or done something other than stand there breathing too carefully.

“What is going on?” I demanded again.

Mark looked at Sophie, then at me.

And finally said:

“I was following the pediatric behavioral plan.”

The sentence hit the air and didn’t land.

“What?”

He ran a hand through his hair, suddenly exhausted.

“She’s been struggling with sensory regulation. Fear responses during bath time, anxiety spirals before bed. Dr. Keller referred us to pediatric occupational therapy last month.”

My mind scrambled.

No.

That didn’t match the secrecy.

The cups.

The timer.

The “game.”

I shook my head.

“You don’t do secret bath games with a five-year-old.”

“I wasn’t making it up,” he said quickly. “It’s structured exposure therapy. We turned it into a game so she wouldn’t panic.”

Sophie buried her face into my shoulder.

Mark continued, voice tighter now.

“The ‘game’ is timing how long she can stay calm in warm water without escalating fear responses. The cup—” he pointed toward the sink, “—is for pouring exercises to reduce her tactile sensitivity. The timer is part of the routine. The ‘secret’ part—”

He stopped.