The All Souls Trilogy.
Sat down to read it, and I was super into the premise: A 30 something year old woman who comes from a family of ridiculously strong/famous witches but could never practice magic herself. She finds a magical book that seems to get the attention of every other magical creature (daemons and vampires also exist) and she's the only one who can access it for some reason. Never did I think I'd be reading about someone's eating habits, work out habits, and sleeping patterns in so much detail in a book about magic. Of course, there was a budding romance between the main character and her vampire counterpart. Before I knew it I finished the entire series. I wanted to burn the books at the end. The main character, who is a 30 something year old adult living on her own, becomes worse than YA protagonist. She became whiny, ineffective and just ANNOYING. She fawned over the vampire dude nonstop, telling the audience how much she waited for hours in her living room, thinking of what she'd be doing once he arrived. Only to stop her musings when her stomach grumbles and then she'd open her cabinets, searching for something to eat. She'd find a couple pieces of bread and put them in the toaster before turning the dial to toast them. Do you see what I'm getting at here. IT WAS SO BAD. And don't even get me started on the plot. Oh my god, there was time travel, there was romance, there was some science (shitty science), there was family shit jammed in as well. Did you know our wonderful protagonist whose family is almost ashamed of her because of her lack of magic is ACTUALLY THE MOST POWERFUL WITCH IN THE WORLD??? Her parents were two super strong witches and when they fucked, their off spring was the strongest thing alive. She's an elemental witch, a time traveling witch, a witch that can conjure familiars (which in this world is just an old wives tale), she can CREATE NEW SPELLS (another thing that's extremely rare in this world). Oh and she's also the chosen one in a prophecy on how to connect all three magical races together. She fucks the vampire dude and has babies. BUT ONE OF THEM IS A VAMPIRE. God this book series was so fucking bad. There was also some other bullshit about how her vampire fuck boy had this weird vampiric disease that caused him to go berserk randomly, which caused him to be like "NO I CANT HAVE BABIES" when he found out she was pregnant. God I hate this series so much. There were decent ideas there, but they were just not given room to breathe. The main character was unbearable, whiny and just down right immature. Just no. Don't read it unless you wanna waste about 20 hours of your life.