I have a lotus flower.
That's a good word.
In Buddhism, Buddha often rides on a lotus flower stand, called a lotus stand.
So why a “lotus flower”?
You'll often see lotus flowers blooming in ponds and swamps.
The surface of the water where lotus flowers are blooming looks beautiful, but the bottom of ponds and swamps is full of cloudy mud.
The root of a lotus flower, or lotus root (lotus root), takes root firmly in deep, cloudy mud and grows strongly.
Also, no matter how muddy the water is, those clean, large flowers bloom.
Buddha compared this world full of desires for sentient beings to a “muddy pond.”
Then, we compared becoming a Buddha to a “lotus flower,” saying, “No matter how much the world is full of worries and desires, beautiful flowers bloom without being stained by it.”
I'm sure that monk saw the child and felt something as pure as a lotus blooming beautiful flower even from inside the mud.
I think he said “you have a lotus flower” in the sense of “you have a pure heart.”
That's great.
Please feel free to nurture your child's beautiful heart.