It's all about drop luck. I see some people already got Ophelia by now while I'm at 547/600 Love Arrows with 13h remaining of event. Sadly I mostly got 2 and 3 and rarely 5 or 6 love arrows drop. Anyway, as a f2p there's no way you can get more then a maid and maybe an item if you wake up at night to not lose energy
Has anyone tried the Valentine's Gasha?