This was a little different from what I usually read, but I actually ended up loving it. The twists and turns toward the end there kept me glued to the story. It did end with some unanswered questions, but that builds up anticipation for the next book.
Squirrel Girl is by far my favorite superhero. I have to read everything with her in it. This was mostly told from Ms. Marvel's pov, but it was done in such a way that we got a good sense of all the characters. It's fun, not too serious, and highly entertaining.