I don't want to confuse forced marriages with abusive marriages. There are two distinct categories.
One category is where the marriage is void or voidable ab initio because it was performed without consent. This will be a pure forced marriage. The risk is that if she comes forward and says this was void ab initio, the officer will have to say this whole sponsorship needs to go out the window.
Then her option would be to make an application on humanitarian and compassionate grounds, in which there is no assessment of the risk. My recommendation is government should assess risk for these victims or survivors of the forced marriages when that stage comes.
For the situations where the marriage started as a genuine marriage, but became a situation of abuse, right now she can report it. In more cases than less, what happens is before she can report it to Citizenship and Immigration, she makes a 911 call, or somehow reaches a social service agency, which involves the justice system or not, depending on her situation. She might be very shameful; her community might not support her if she goes to the police, so she chooses not to do anything about it, or do something about it.
In either situation, Citizenship and Immigration Canada runs an A44(1) report on her, looking into whether she used the system, or if she was a genuine, sponsored person. In those cases, as I mentioned before, the burden of proof on the women is very high. They're supposed to prove too many things for the abuse they have experienced, and that burden of proof can be lowered—