Paradise is the abode for good believers. Allah promised those who believe in Him will be admitted to paradise along with their wives and children. Their reward will not be diminished.
A woman will be with her husband in Paradise, and even with her children, sons and daughters, if they are Muslim. This is indicated by the following Qur’anic verse: (And those who believe and whose offspring follow them in Faith, – to them shall We join their offspring, and We shall not decrease the reward of their deeds in anything.) (At-Toor 52:21)
It is also indicated by the du’aa’ of the angels who carry the Throne: (Our Lord! And make them enter the ‘Adn (Eden) Paradise (everlasting Gardens) which you have promised them — and to the righteous among their fathers, their wives, and their offspring! Verily, you are the All-Mighty, the All-Wise.) (Ghafir 40:8)
Thus, the above-mentioned verses indicate that believing men and women will join each other. If a woman does not get married in this world, Allah will grant her a spouse in whom she will find delight in Paradise. The joys of Paradise are not limited only to males – they are for males and females alike, and part of that joy is marriage.