megan's dad promised in writitng to pay her $2,000 if she would refain form drinking alcohol for two years. megan who was 25 years old at the time of her dad's offer agreed and she refained from drinking alcohol for two years. megans dad now claims that because megan suffered no detriment by refaining from drinking alcohol there was no consideration and no contract was formed. if megan sues her dad, megan will likely - win or lose? Why or why not?