File photo: I know moms who have fired their caregivers for becoming too attached to their kids. Picture: Reuters

From the kitchen, I could hear my 10-year-old son Benny moaning with a stomach bug. Coming into his room, I put my hand on his clammy forehead, checking to see if he was still feverish. But he batted my hand away and called out for Dora, his nanny. "I want Dora to rub my back," Benny said. "Get Dora."

That's not the only time he's asked for her instead of me. The other day, I rearranged my work schedule to pick him up from school - normally Dora's job. I eagerly anticipated seeing his face when he scanned all the other moms and found me. But when his eyes finally met mine, they hardly lit up. "What are YOU doing here?" he said. "Where's Dora?"

It's a legitimate question. Unlike me, Dora is always around. She takes Benny and his older sister, Talia, on outings after school. She trundles them off to their haircuts and soccer classes and play dates. Dora and my kids have routines and rituals in which I have no part, often because I'm at work.

Still, it hurts every time they choose her over me. There is anger, yes, as well as pain and jealousy. And then there is a wave of guilt. Does she care for them better than I do? Am I inadequate as a mother? Who is their real mom?

These thoughts and feelings never sit well with me. Why am I so threatened by this wonderful woman's relationship with my children? I have no reason to be jealous. Dora makes my life possible. She cares for my kids as if they were her own. She brags about Benny's report card on Facebook and shamelessly trumpets his good looks. At Talia's bat mitzvah, Dora beamed with a mother's pride.

Mothers and nannies: It's a complex relationship. I know moms who have fired their caregivers for becoming too attached to their kids, to say nothing of those let go for being more tied to their phones than to the children under their care.

Since the flood of women entered the workforce in the 1960s, generations of mothers have worried about finding responsible child-care providers. Reports of shaken babies and unattended toddlers add to their anxiety, leading to widespread use of nanny cams. Yes, watching our kids remotely gives us some comfort about their safety. But it also reminds us of all the moments they share with their nannies rather than us.

The resulting feelings are complex. We want our nannies to nurture our kids as we would. We want them to love them - but not too much.

My bond with Dora, though, is different, because Dora also raised me. She's been with my family since I was two years old. She arrived in New York at age 20, after crossing the border in Mexico from Guatemala. At the time, my mom was desperate for someone to watch us while she started a jewelry business. I took to Dora immediately.

Her devotion is regularly noted by other moms, particularly the ones who cycle through nannies faster than handbags. They tell me how lucky I am to have her. And they're right. But not in the way that they mean. I don't have her. I realize now that we have each other. We always have - right from the start.

Why then, given a long history of affection for Dora, do I wrestle with the loving bond she has with my children?

My father, a psychiatrist, always said that the first few years of a child's life are the most critical. The care and nurturing they receive during this time helps determine their capacity for love and empathy and trust. Neglect or deprivation in these years can have serious consequences. But the flip side, an overabundance of love and affection, has only positive benefits.

I've learned that with children, love is never a zero-sum game. Just as we wonder whether we'll love our second child as much as our first, we question whether our kids' attachment to their nanny diminishes the love they have for us. It's an understandable concern. But I've now been on both ends of it. And I know - intellectually, at least - that there's no reason to fret.

Do I still have twinges of jealousy when they're cuddling on the couch? Yes. That may never change. But I'm comforted knowing that Dora is there for them as much as she was - and still is - for me.