Yes, Claire gets kidnapped and gang raped in, I think, Snow and Ashes. Then Jamie, Roger, Fergus and the men of the Ridge rescue her with much slaughter and mayhem.
There is a lot of rape/dubious consent, I truly think DG has issues. Some of it can be put down to the historical position of women, some to the fact that consent issues, even recently, were not as clear cut as they are now, but some of it must surely be down to how DG sees sex.
I think that a lot of what happens to the main characters is kind of tit for tat. J is raped, so Claire is too: J almost dies after being poisoned by by a bite from a snake in the long grass but "chooses" not to die (NDE), Claire almost dies, but chooses not to, after being poisoned by a very human snake in the grass (NDE): J almost dies on battle, repeatedly and has to be operated on with only laudanum to kill the pain, Claire is shot in battle and is operated on under the same circs: Jamie remarried while Claire was gone, presumed dead, Claire remarries while Jamie is gone, presumed dead, the difference being that Claire was gone for almost 20 years, Jamie was only gone for a few days! After discovering said remarriages there is violent, angry make up sex. All very tit for tat. If I didn't love the books ( and Jamie) so much, I couldn't be bothered with them at all