Have you read the Sookie Stackhouse series (what True Blood is based off of)? I blasted through the first nine books in the past few weeks and I love them. Far more fascinating than Twilight (shut up!). I just ordered season one and two of True Blood on DVD since I liked the books so much.
I feel like these vampires are more Bmom's style than Twilight vampires so I think she'd like this. They're muderous and sexy, just like she likes them.
I also recently started the Stephanie Plum series by Janet Evanovich and I'm really liking it too. I've only read book one but it wasn't the typical comedy mystery because the lead character is so average. I loved that.