Suddenly, months of strange behavior came rushing back.

The late-night texts.

The locked phone.

The endless “work dinners.”

The excuses.

I called Miss Greenwood, who admitted that Ava seemed unusually comfortable around Lauren.

That bothered me even more.

It suggested they had met before.

Part 2:

When Mark came home that evening, I confronted him.

The moment I mentioned Lauren, his expression changed.

After several painful minutes, he finally admitted the truth.

He and Lauren had been having an affair for six months.

The confession felt like another funeral.

Then he revealed something even worse.

On the morning Ava died, he had picked Lauren up before taking Ava to daycare.

Lauren had brought drinks from a nearby café—coffee for Mark and a smoothie for Ava.

“What kind of smoothie?” I asked.

“Strawberry banana,” he replied.

My stomach tightened.

Ava had a serious dairy allergy.

Everyone close to us knew that.

Lauren didn’t.

Mark had never told her.

The smoothie contained dairy products.

In that moment, everything became clear.

Ava’s death wasn’t caused by some mysterious medical event.

It happened because my husband was distracted by his affair and failed to protect our daughter.