Rape is one of the most heinous crimes a man can
commit. Obviously, his victim is absolutely blameless. On the contrary, she
deserves all the sympathy and compassion a society can give her. A raped lady
does not become impure in anyway. Only a willful indulgence in such an act makes
the concerned man and woman impure. So, yes a chaste Muslim can marry her.
The one thing that a person must consider is pregnancy; if
the lady has become pregnant as a result and has passed the abortion period,
then of course till childbirth she should not marry anyone. After childbirth
only marriage options can be considered.
You can now marry her keeping the implications of such a
marriage in mind; you maybe doing a pious gesture, but your family and the
society might make your life miserable; embark on this venture only if you are
able to handle these pressures.