I've been a Mormon all my life. My ancestors have all been Mormons going back for three or four generations. I've been through the Temple ceremonies and everything.
There are a great many claims that have been made about Mormonism, including the claim that is under discussion here, that I have never heard from any source within Mormonism; but only from outside sources that deliberately spread lies about Mormonism, such as the source which you cited. It is a shame that so many people are so foolish as to believe such sources as those, rather than take the word of actual Mormons who know from direct firsthand experience what we are taught, what we believe, and what we practice.
But then I guess this is to be expected, on the basis that claims that are tawdry, scandalous, and bizarre, are more appealing, regardless of whether or not they may be true; than much more mundane claims that are more clearly true. In trying to explain our religion in an honest accurate manner, it is often difficult to compete in terms of this sort of appeal against the bizarre claims made about us by our enemies, which, while entirely untrue, are much more interesting than the truth.
But I will state this as clearly as I can. Mormonism does not teach, and never has taught, nor do Mormons believe, that a woman can only enter Heaven with the help of her husband, nor that having a certain number of children is relevant in any way to whether or not she gets to enter Heaven.