I have also reached level 50, which isn't surprising given the experience gained from the catacombs' battles. The most remarkable increases are in Dark Aura and Item Box, both of which are difficult to level up, yet they improved significantly.
Especially Dark Aura, which usually requires hitting multiple targets during battle, leveled up independently. Perhaps she dragged some guild members into it.
Unless activated with Arts, Dark Aura is merely a malevolent, high-consumption skill with no real effect.
I'll think about the skills later; the main focus should be on Liora.
Name: [Liora]
Gender: [Female]
Level: [51]
Race: [High Human]
Job: [Apostle]
Magic: [Flash Magic 31], [Light Magic 61]
Craft: [Landscaping 28]
Skills: [Loneliness Resistance 50], [Scythe Technique 59], [Summoning 31], [Shrine Maiden 48], [Chant Extension 28], [Moonlight Scythe Technique 25], [Angel's Factor 10]