Q. Why matajis cannot take sannyasam?
A. The Vedic scriptures recommend that a woman needs to be protected during all stages of her life: by her father during childhood, by her husband during youth and by her grown up son during old age. Otherwise, if she is let alone, she will be mistreated and exploited by unscrupulous men. Especially in Kali-yuga, because men are not trained how to respectfully treat a woman, women are all the more vulnerable. This is evident from the rising number crimes committed against them. Women are also easily fooled to think they have become independent.
Therefore the Vedas forbid women to take sannyasa. She simply needs to follow her husband and assist him in his spiritual duties. In fact, this is a blessing on her because without undergoing any of the strict rules a man is expected to follow to achieve perfection, a woman can achieve the same position simply by following her husband.