What I liked most about Your Guardian Angel was that I didn't see the main twist, for me anyways, coming at all. I started reading the book and I thought, "huh, I didn't expect that to happen" and then I kept reading and kind of got used to the idea of "that" happening ("that" equals some important event and is purposely vague for spoiler purposes) and my idea of the book changed as I got more and more comfortable with the idea. Then all of a sudden, boom! another change happens and it threw me for another loop. It took me some more time to get used to the new twist but ultimately I loved the way it all happened. Skyla Madi did a good job keeping the plot interesting throughout the book. 
 Ruby is put through the ringer in Your Guardian Angel. Sheesh, she really had to deal with a lot, but once she gets to sage academy I felt like the book really started. You get to meet all sorts of new characters. The most important secondary characters being her new best friend, Mila and her guardian angel, Eli. Both relationships happened really quickly and normally snap friendships bug me even more than insta love, because I tend to see a lot of insta love as just infatuation anyways, but friendships should be based on something a little more substantial in my opinion. Now, that being said, I completely loved Mila. She is just a cool girl. She always had Ruby's back and she is just a genuinely nice person. I wish Ruby had more people like Mila on her side. 
 Eli was interesting and their "relationship" was interesting. You can probably guess that relationships between guardian angels and goddesses like Ruby is not allowed. And you can also probably guess that they are going to fall in love anyways. I would have liked to see a little more development of why they liked each other, but I did like that it took them awhile before either of them even thought about acting on anything. I also liked the little jealous moments when boys at school noticed Ruby. I guess we will see how this all plays out in the next book because in the first book it was much more Ruby driven and information driven about the world of vampires and goddesses, which I appreciated. I thought that the plot was a little slow in parts, but other than that I really enjoyed the book. I thought it was a great setup for the next book in the series, Sun Kissed. The ending was a real humdinger though! Man! It was kind of depressing actually. But you know what? I kind of liked that too. Not every book needs a happy ending and this is just the first book in a series, so there is plenty of time for things to turn around and for things to happen. I liked that this ending kind of shook things up. It makes me more interested in reading the second book. If you like young adult books with paranormal creatures in a magical school setting and lots of action and fights, then you should check out this series.