No, there is nothing like that. Astrologers say many things at times. Like I just explained, the Kundli simply gives you pointers or indications as to how things would happen.
Take your mother-in-law for instance, it says that she will attain dispassion after the age of 50. But that does not mean that she will abandon her family and become a recluse. If she continues to do her sadhana and meditation, then she will be able to fulfil all her family responsibilities and at the same time also continue to move forward on the spiritual path. This is what you should understand.
You should not bother too much about all these things. May be you trouble her a lot, that is why she must have said this thing (laughter
COURTESY OF SRI SRI RAVI SHANKAR