Rupee: Winter Shopper
Electric 
Assault Rifle 
Defender 
Burst 1 
Tetra Tier 5 Winter Premium
■ Activates when the last bullet hits the target. Affects all allies.
DEF ▲ 19.02% for 5 sec.
VIP Gift
■ Affects all allies. Activates when any ally unit uses Burst Skills.
Shopping: DEF ▲ 1.33%, stacks up to 4 time(s) and lasts for 20 sec.
■ Affects all allies. Activates when the caster reaches max stacks of Shopping at the end of Full Burst.
Burst gauge loading speed ▲ 7.9% for 5 sec.
Shopaholic Date
■ Affects self.
Attract: Taunt all enemies for 5 sec.
Recover 50.47% of attack damage as HP over 10 sec.
■ Affects all allies.
Reload Speed ▲ 63.17% for 10 sec.
Re-enter Burst Skill Stage 1.
Skill recommendations
Solo Raid Usage
This is based on the top 50 players of all NIKKE servers combined. Data is from enikk.app, check their website for a lot more raid data.
Extra notes
By today's standards, a really bad kit that's just underwhelming on most (if not all) PVE content. Invest only if she is your waifu.