what may happen if Ryan does lie for his coworker?

Ryan has a coworker who helps him with special projects when time is short. When the coworker tells Ryan she needs help with something, Ryan immediately responds, "Sure, no problem." Unfortunately, there is a problem: The coworker wants Ryan to attend a meeting for her and tell those at the meeting that she is home sick when Ryan knows she plans to take a trip with friends. Ryan tells the coworker that it would be unethical to cover for her. "But you owe mel" says the coworker. Ryan is unsure what to do. After some thought, Ryan tells the coworker that he wants to repay the favor and appreciates all the help the coworker provides, but he will not lie for her. Ryan should expect some tension with this coworker, but in the long run, she will respect Ryan