Dolla

A Burst 2 support who reduces Burst Cooldown with Risk Sharing2 on every Full Burst and buffs allies each time a Burst is used.
In some Solo Raid seasons she sees high usage as Burst cooldown support, but she overlaps with Liter, Volume, Helm, and others, so she is not a general-purpose main Burst 2.

Entrepreneurship1 periodically raises ally ATK, and when Full Burst starts, Risk Sharing2 reduces Burst Cooldown with stacking reductions.

Each time an ally uses a Burst Skill, Risk Sharing2 applies tiered ATK/Critical buffs. R&D ShotB is a Burst 2 that damages the 1 enemy with the highest DEF, with a 20-second cooldown.

Align allied Burst timing right before/after Full Burst.
Entrepreneurship1 and Risk Sharing2 trigger even on auto.
Manually aim R&D ShotB at high-DEF enemies.

Lineups differ across recent Raid main squads, so it is hard to lock her to a specific Nikke. Some lineups slot her as Burst 2 support when Burst 1 lacks cooldown reduction.

Go Resilience Cube for fire rate/reload, Quantum Cube for Burst Gauge, then Assault Cube for Full Charge Hit Rate.

Skip DPS lines such as Elemental Advantage damage, ATK, and Charge Damage. Consider ammo/Hit Rate for Burst Gauge and DEF lines for survival.

Raise Risk Sharing2 and Entrepreneurship1 first and keep R&D ShotB low. Burst cooldown reduction is the key.

Often slotted in Solo Raid as Burst Cooldown support. Not a main Burst 2 for Campaign or Arena.

Risk Sharing2 reduces Burst Cooldown on every Full Burst.
Each Burst use applies tiered ally ATK/Critical buffs.
Entrepreneurship1 periodically raises ally ATK.

As a Sniper Rifle she contributes little Burst Gauge.
R&D ShotB damage alone is not enough to justify the Burst 2 slot.
Her role overlaps with general supports like Liter, Volume, and Helm.