mother-in-law (wife's mother)

My mother-in-law prepares it.

妻の母が準備します

My mother-in-law prepares the side dishes.

妻の母がおかずを準備します

My mother-in-law prepares the side dishes in the kitchen.

妻の母がキッチンでおかずを準備します

My mother-in-law prepares the side dishes in the kitchen in the morning.

妻の母が午前にキッチンでおかずを準備します

My mother-in-law prepares the side dishes in the kitchen with her daughter in the morning.

妻の母が娘と午前にキッチンでおかずを準備します