Legally, you are correct: unless there was an agreement to the contrary, when a business with two equal owners is dissolved, each one gets 50% of its remaining assets, money, etc. (after first paying off any remaining business debts). But she wil not agree to that, you'd have to sue her to enforce a 50-50 division; you need to consider whether the time, cost, and famly acrimony of that is worth whatever additional amounts or items you hope to get.