How do I confront my girlfriend for overspending my debit card?

I saw a huge amount of $500 my girlfriend spend at Sephora. I went to the bank the banker show me over $300 was spend at Lululemon and what's Lululemon?

I never shop at no store called Lululemon. I give my girlfriend trust to used my debit card in case she needed food or gas. Now Sephora is make up store not food.

Why did my girlfriend broke my trust when I was clear to her to only used my card for her needs.

How do I confront my girlfriend for overspending my debit card?
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