Ive gotten all the event girls. I know it seems like they will never drop, but every hour i use all my bp. Most of the time they drop just before i go sleep. Some were close calls, dropping on the last day. I alternate between the 2 trolls, and that works for me.
I think you can increase the odds. You need to have a specific booster that raises luck. I have a Chlorella. A Epic item from a quest at the start of the game. Never used it, but it does raise luck. Like 1200 points for 3 hours. You cannot buy it, but you can sell it for like 2k.
Well 10 days in I will say now, if I am shut out again during this event I will quit. I am a whale as is evidenced by my being level 144 and winning a lot of contests. I started out using about half of my battle rolls on trying to get the cheerleader, but that is about two thirds now. I had hoped to get both girls. 300 attempts later I haven't gotten either. The chances are supposed to be higher during the event. I've been long complaining how tough it is to get new girls. I realize they need to generate money, but that's ridiculous. Perhaps its a blessing as I will have much more time on my hands.
Well its realy about luck ... I invest all energy to get event girls first and only care about money/pvp points later ... in this event I managed to get them in first 3 days. But yeah I can get how frustrating it can get not to drop event girls so close to the end.
I think I had them both by day 2 and day 6, then back to grinding cash on last boss.
That's not luck. At this point I figure I am approaching 500 rolls with zero result. Add to the insult that the only reward is 2500 cash, which isn't even as much as a PVP roll where I would also get mojo and XP. I get the feeling its something stupid like the system not realizing there is a girl available because I already have the girls from the Dark Lord.
Then you wouldn't be the only one. I would be in the same position, and so would many others. Dark Lord is the first boss, and involved in almost every event, so there are many who have all his girls. As far as anyone can tell, it's bad luck. The general consensus is that droprates are between 0,3% and 1%. With 500 rolls and the most generous estimation of 1% droprate, that would still be around 0,65% chance of you not getting it. If we take the least generous estimation of 0,3%, that would put you at 22% chance of not getting the drop. None of those chances would make it unreasonably unlikely for someone to not get the drops.
Your not the only one, i would say i have tried at least 400-500 times since my last drop. I can't get any of the common girls or the epic ones i only seem to every be able to get the rares.