In other media too it is often just a pretty cheap way of creating drama or shock factor and giving female characters a traumatic backstory, but it is rarely handled as something that has narrative relevance beyond that.
As an example of poorly portrayed rape in fiction, pic related. I'm pretty sure that that the main character Friday (in cover) is raped in the beginning in addition to being tortured just as an attempt to get reader hooked with something controversial and implication of BDSM titillation, but the character herself just instantly gets over it and experiencing it does not have much relevance to her life afterwards.