I had no real reason to, but I wanted to finish the event completely. I needed one more ear hat to get her to level 2 for the last task. I generally don't see much use for time skips, so I have like 10,000 of them, I used about 700 of them (I think about 40-45 skipped tasks) and didn't get that one single hat. I was previously, and remain, convinced based on my own experience that using time skips to get legendary items is completely futile. I ended up spending 50 gems for no real reason to get her to two and finish the event.