Our son, Toby, was born a few weeks before Hannah’s sixth birthday and from the very first moment he was a joy. I adored being his mother; the way his little eyes would follow me around the room, how he’d reach for me as soon as I drew near – the almost telepathic way we communicated. It was as though we were one person; he seemed to melt into me when I held him, his head tucked tightly under my chin, the skin of his body warm against mine. I felt as though finally I was loved and needed in the way I’d always dreamed of being. We adored each other, it was as simple as that, and yes, I guess it did make Hannah feel pushed out a bit.

But I tried hard to make her feel included. I followed the advice in every book I could find about sibling rivalry, did my best to show her she was loved as much as her brother. It almost always backfired. ‘Today we’re going to have a Hannah and Mummy day,’ I told her one morning over breakfast. ‘What would you like to do?’ I asked her brightly. ‘Anything you want!’

She stared balefully back at me as she shovelled Shreddies into her mouth, but didn’t reply.

‘Swimming? Cinema?’

Still nothing.

‘Shopping for a new toy?’

She shrugged.

‘Shopping it is then!’

We drove to the nearest town with a large toy store in its centre. ‘We can go for tea and cakes first,’ I suggested. ‘Isn’t this fun? Us girls together? You’re such a big girl now, perhaps we can choose a pretty dress for you.’ She just stared out of the window while I prattled on.

The shop was one of those lovely old-fashioned ones selling tasteful and expensive handmade toys for the sort of parents allergic to plastic. It wasn’t the kind of place I usually shopped in, but I’d wanted to buy Hannah something really special and original. We wandered the aisles, but though I pointed out countless dolls, games and stuffed toys, she barely glanced at them, staring back at me with undisguised boredom. I began to lose my patience. ‘Come on, love, you can have anything you want, just take a look!’

It was at that moment that I spotted, at the far end of the shop, someone I used to know from the village I grew up in. I completely froze, my heart pounding at such a strange and unexpected shock. I ducked my head and turned quickly away, hurrying along another aisle. I couldn’t face the questions that would have been asked, the inevitable fishing for details as to why Doug and I had left so suddenly all those years before.