Focusing on the role:
* Nurturer of tiny hands
* Home's heart and keeper
* Love's weaver and guide
* Tiny humans' guardian
* Laughter's architect
* Chaos's calm amidst
Focusing on the household:
* Kitchen's queen and garden's hand
* Walls' keeper and hearth's fire
* Home's sunshine and laughter's source
More metaphorical options:
* Whispers' weaver and dreams' keeper
* Love's haven and laughter's well
* Tiny lives' compass and guiding star
The best kenning will depend on the specific context and the tone you want to convey.