I am reading the horoscope of your wife(born in 1986).
Her lagna is Kataka.
The question about children,has to be studied from fifth house.
She has got Sani in fifth house.
She already got one son.
Sani in fifth house is not good.
But fifth house owner is in a kendra.
So,she may have a boy child next time.
Generally ,when sani is in fifth house,
there will be delay in getting children.
As she already got first son,that point need not
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