Here is a review for BriarxWitch

My comments will be in bold

Basics and grounding

It's not very often I review this universe but I know it really well, might be a little rusty though so bare with.

Character information

Alright so the basic concept is pretty decent here but there are a couple of issues. You haven't actually given her a last name since I assume that that is her first name due to the hyphen, so think of one.

With her appearance and personality you have to develop them more abd be more detailed. State things like body type, weight, height, all of that good stuff and just give her more personality traits. Make sure the personality traits don't contradict too, since being smart enough to not trust people until they earn it and being naive clash.

Relationships

Right for most of these it works fine. Be careful with missing parents but it works fine in this world and develop the characters and their relationships further.

My issue here is having Peeta as a love interest, for obvious reasons. Now, I have no issue with oc x Canon and I think it can be very good, if done well, which often means not really interfering with Canon Relationships. Peeta is Katnis' love interest and one of the most important characters to the plot, which means you'll have to completely change the plot in order for this to work. I suggest picking another love interest if she has to have one but at the end if the day that's up to you what you do.

Backstory

Alright this works for what you've given me but you haven't told me much about her childhood or her relationships with the people around her. I mean, her father is missing and you can't just throw that in without showing the effects of a missing parent.

Work out her life beyond the games and before she was in the ring along with her life after since that's a couple of years with a luxery life.

Overall work on making her feel more realistic and fleshed out.

Other

If she's good try and show some form of training.

Stats

Stats are reasonably balanced so no issues here.

Final thoughts
I think you could have something with this character but you need to smooth out some bumps and develop her a lot more in order for her to work and make sense in this universe.

*My critiques are simply at your request and to help improve your character. It is not my intention to cause any offence and you, of course, do not have to listen to what I've said. This is all just a bit of fun and I apologise if I have done any kind of damage*