Can't remember this book title

[Zigg]

So the plot is that some Christians(I think) made a cult and set off a bomb that opens a portal to another dimension. The portal lets in fantasy creatures (evil ones) and I think hellhounds? Some people get powers via hellhounds and they get a symbol that gives those people powers. The main character is a girl that has three hounds(which is uncommon) and she's sent to the big city to help combat the monsters and junk. While on the train they get attack by a alien person?(They call them something else) and a wyvern. Theres also mind-reader people but they also call them something else, anyways I just wanna find the book again cause I remember really liking it.

 

[SurrealSisyphus]

Are there any specifics? Usually something like the name of those marks, the hounds, even a main character name can help greatly.

 

[sueelleker]

The "Hunter" series by Mercedes Lackey. The "alien" is an elf. Mercedes Lackey's Hunter books in order