Raise attitude to 1000(optional?)
To get foot masage, gg must do work in city to get tired legs.
10-16, Hall, watch porn, jerk off, randomly get caught, it will increase nina's depravity til 350. attitude will decrease
10-13, Nina's bed room, search for panties. get 2 panties.
16-19, my room, masturbate on panties, get caught(randomly, save before). Let her go -> Say she is wrong. Let her go. Each time you get caught, nina's depravity increase by 40 til 500. Attitude will decrease by 50. 
16-19, my room, Nina's depravity>=450. gg's depravity>=400, masturbate on panties, get caught. Suggest a handjob. Now you can call aunt to your room in the morning.
Now you can ask for a handjob during massage with hard on.
7-10, my room, attitude>900, call aunt for handjob.
call aunt at least 6 times.
23, Nina's Bed room, randomly watch Nina masturbate by watching her sleep. watch 3 times.
22, Nina's Bed room, approach her, talk about sex. Start oral chain.
7-10, my room, attitude>900, call aunt, this time she will lick you.
16-19, hall, approach her, discuss the incident. (Next day?)
7-10, my room, attitude>900, call aunt, ask to lick(Arousal can't be 0). ask to see tits. See tits 3 times.
22, Nina's bed room, approach her, make a special compliment
Now you can molest her in the kitchen at 8 or 20. Molest her 5 times.
22, Nina's bed room, approach her, Talk about Molest
7-10, my room, attitude>900, call aunt, she sucks you. get 4 blowjobs first.
16-19, hall, approach her, thanks for the blowjob. next day, chat about molest, next day, thanks again.
Now she will suck you at different locations. Get at least 10 blowjobs in total.
22, Nina's bed room, approach her, Fondle aunt
22, Nina's bed room, approach her, Fondle aunt, discard blanket, undress, fuck, cum...
16-19, hall, approach her, Discuss the incident
22, Nina's bed room, approach her, Fondle aunt, discard blanket, ...
16-19, hall, approach her, Discuss the incident
22, Nina's bed room, approach her, Fondle aunt, discard blanket, ... do 3 more times on different day.
16-19, hall, approach her, Discuss sex Now she is yours.
Might be more variables, but you should be okay from now on.
Alt Route need to drug her, rape her without wiping off the semen. You will get a call from her then route starts. Not interested in rape route. Good luck.