Go for Berserker/Warlord/Gladiator, all 3 which are perfect for her class except for Dragoon.
If you need a jumper for gold mines, you can get a Lancer Fiona to help with.
Currently have a 3 star Freya with Ares faith. I already have a Freya Dragoon, and I was considering using the new Freya to just limit break the Dragoon.
Now I'm considering making her a berserker instead, because of your comment. I would just like to request for more information regarding your post as to why you think Berserker/Warlord/Gladiator are perfect for her, while Dragoon isn't. Information/stats/facts would greatly help me justify my decision.
Thanks for the help

Okay before I give more information to back up my previous post, I would like to say that if you have a 3 star Freya with Ares faith, please please don't waste that faith to be a lb fodder, most of Freya's classes are actually really good and you could slot two different Freya in the same squad to work well!
Why I think Freya Dragoon is bad is because you're basically jumping out of position and stunning for one turn (which is a really low duration since it's just one turn!) without any shield to help, so you'll probably be aimed and killed by the next turn easily in arena or even PvE (although most of the time in PvE, you want to maintain your formation for auras), Vincent has the shield to actually shield him from being out of position so he can actually do a follow-up from his new position.
Gladiator is really good because she stuns and burns the ground for two turns in a row, meaning that they're guaranteed to eat the entire burn since they're stunned!
Warlord is good as well because of her Command Aura and pull utility both combined in a unit.
Now, regarding Berserker, I used to think Vincent > Freya because Vincent has 'better' drawbacks (-20% HP per turn as opposed to losing defence) and a 'better' aura, but after owning a Freya Berserker, I have found out that neither of those are totally true, with proper units beside your Freya, revenge aura actually has a 65.7% chance of retaliating and stunning the target instead of 30% plus with her defence already that low (she's on low end 2k), a 30% wouldn't hurt her defence much as compared to a penalty on a way higher def unit since percentage scales, while Vincent takes off 40% of his max HP no matter what.
Of course, if you're able to MLB a Vincent or even have a Vincent and plan to make him into a Serk and MLB him, by all means go ahead with skipping Serk on Freya but if you're unable to, a Berserker Freya would bring immediate returns in both Arena and PvE (especially Capitol 3).
Speaking from your perspective, you're relatively new, so a hard hitter from get go like the above poster mentioned would benefit you the most in your stage of the game, unless you want to leave it to the premium rolls for Vincent (which isn't guaranteed, by the way).
Source : Long time Freya Warlord owner and a recent Freya Berserker owner.