With her skill kicking, she deals a fixed amount of bonus damage based on how many enemies show up, and deals bonus damage when she changes targets. The good part is that since it's a fixed amount based on enemy count, the rest of her stats don't matter. Doubly so because it ignores Armor, Evasion, Shields, etc., so she can still be useful while suffering from the stat penalties of using Parachute Fairy.

She has an SVD so she's... EXACTLY NOTHING LIKE SVD. She's closer to QBU-88, having an AoE effect, but she has self-buffs on top of that and, in some situations, can match and exceed such DPS staples as M14 Mod. Honestly if you're coming out of the event with only one of the girls (besides Henrietta who you get just for doing story), then it really should be Rico. Also remember that her tarot cards are used up BEFORE the active part goes off, so you don't get the passive benefit for the nukey bits.