Suppose Alice, an LP, contributes 1 ETH and 3000 DAI to a liquidity pool, initially valuing each ETH at 3000 DAI and her total contribution at 6000 US dollars, now the pool's new composition (or total supply) is 5 ETH and 15000 DAI. Later, as the price of ETH rises to 6000 DAI per ETH, and trading activities alters the pool's composition to 3 ETH and 25000 DAI. If Alice experiences impermanent loss upon withdrawing her share, what is the amount of her loss in US dollars (Assume there is no additional fees occurred during those transactions). (Please provide your answer as a decimal number rounded to two decimal places. If your answer is a whole number, ensure you include the decimal point and two zeros after it to reflect the required precision. Enter only the numeric value, without any additional text or symbols)