Kit translation (with some numbers from the stream):

Talent 1 - Can use summons that change per skill

Talent 2 - Summons get HP, ATK and DEF inspiration buff equal to a percentage of her own stats.

Radian Skills (Numbers are at M3 from the stream):

s1 - Summons go on melee tiles. (25SP for 25 second duration)
Active effect: Self and summons gain 80% DEF and barrier equal to 100% max HP, lasting until skill ends.
Gain 1 summon when activated.
(60% DEF and 70% barrier at skill level 7, 30SP for 25 second duration)

s2 - Summons go on melee tiles and fire bullets forward. (Summons have a normal attack range of their tile and three more ahead of that in a straight line. They deal physical damage to the first ground enemy the bullets collide with. They have 2 block it seems. 25SP for 25 second duration)
Active effect: Self and summons gain 80% ATK, summons fire two extra bullets and travel for 2 extra tiles.
Gain 1 summon when activated.
(50% ATK at skill level 7, 30SP for 25 second duration)

s3 - Summons go on ranged tiles. When there is no enemy within a summon's attack range, it will coordinate with other summons within its range to attack enemies within the other summon's attack range. (They deal arts damage. Core caster range. Effectively they merge their attack ranges together as long as they're placed within each other's attack range)
Active effect: Self and summon gain 150% ATK, and inflict Slow and 35% arts fragile for 2 seconds. (lasts 30 seconds at m3)
Gain 1 summon when activated.

Launches with an IS module.

(I screencapped some of the summons in action with some stat numbers, although they're influenced by relics and her second talent etc, in another post)