She did write that, and you'd have to read the part you're describing to understand Sookie's reaction. Spoiler: Another killer (I won't spoil it, but there's *always* somebody trying to kill Sookie) stuffs Sookie in the trunk of a car with a nearly starved/dead-dead Bill. Charlaine makes it clear in her vampire world that sex and bloodlust go hand and hand, and that when the vampires are in their bloodlust, it is practically impossible for them to maintain any semblence of control. When Sookie was thrown into the trunk, Bill didn't know what was going on, who she was, etc., just that he was on the verge of dying and needed blood (and with the bloodlust, comes sex). So, yeah, he did rape her, but once he had enough blood in him, I guess he came out of it and heard her crying and pleading with him and he stopped midway when he got his wits about him. I'm not so sure it was no "biggie" to Sookie, but having been in a relationship with a vampire, I think she kind of understood the whole bloodlust thing (it's talked about frequently throughout the books) and forgave it because he was starving, didn't realize what he was doing and then stopped when he realized what was happening and who it was happening with.
Like I said, it's hard to see where she's going with Eric and Sookie. There are other romantic involvements later in the series, but Eric is *always* in the picture (usually saving her or protecting her). Again, another spoiler, so don't read further, but I think this has been discussed here before .... Bill and Sookie break up early on in the series, but he too is always hovering in the background, waiting to save her (but Eric almost always beats him to it) and win her heart back. It's hard to foresee who Charlaine is going to have Sookie end up with, but the most constant relationship she has through the whole series is Eric, in one way or another.
Another spoiler: I know you've heard about the amnesia that Eric suffers and Eric and Sookie become lovers for a short while. His whole personality changes and becomes loving, devoted, loyal and willing to give up everything for Sookie (his sheriff-ship, his business). Then he comes out of the witches' spell and becomes old Eric again. But later on in another book, he remembers (after needling Sookie endlessly to tell him what took place during that time). And he remembers it fondly (and so do I, because DAMN!), and I think it takes him by surprise, these feelings that he has for Sookie. One of my favorite things about him in the later books is that he always refers to her as, "my lover." "Yes, my lover, what can I do for you?" *shivers*