Lucy Greenwell

But the two girls Jennifer was looking after, Gussie and her sister, they might have.

We know that Jennifer takes Gussie to school each morning, her younger sister in tow, a 45-minute round trip.

She's usually out of the house between about 7.45 and 8.30.

So if Jess was born before the school run, where is she during that drive?

Left at home?

Hidden in the car?

If she's born after, does Jennifer drive the girls to school whilst in late-stage labour?

Childbirth doesn't keep to a schedule.

First babies especially.

Labour can last 12 hours, 24, sometimes longer.

To give birth while caring for two children, one of whom's 10 and so old enough to ask questions, and with a tight school drop-off to manage.

How did nobody see or hear anything?

Standing here in the bathroom, we tried to picture it, how frightening and overwhelming it must have been for her, a teenager, alone, and giving birth in secret.

I wonder, could Jennifer have been one of those rare cases you hear about?

A cryptic pregnancy where a woman doesn't know she's pregnant until labor kicks in.

It's possible.

But for most cryptic pregnancies, labor is so unexpected and so downright terrifying that these women tend to end up in hospitals.

They don't stay hidden.

For Jennifer to have managed this, so many things had to go right for her.

If just one person, a friend, Selena, her family, had noticed her growing belly and spoken out, if one of the children had come in and found her, her cover would have been blown.