I swear these qsp games never go without bugs. Im stuck with mom quest route 3 and betty after I bought her the swinging chair, bough max flowers from shop but in the kitchen on friday nothing happens. No need diologue in the pool either.
If I remember correctly for Betty You need at least 40 friendship points to trigger the date. And a bit of advice , if You doing the date the second time when you have sex with Her change the language to russian, there is an error if You doing it in english.
As for the Mom , You need to do Her quest with the 0.20 qsp without cheats ( at least for Me it only worked with that qsp ).
If You blackmailed the father then You need to do the stepmom quest when She helps You make money by the taxi job. After She says the money was transferred You go to the bank , and at the end of the bank dialog the mc says something like " Mom will be happy" then You need to go and talk to Mom at 17:00 at saturday in the living room. Maybe She needs more friendship point, not sure about that.
I hope this helps.
Edit: If You did NOT blackmailed the Father , and told Nata about Him cheating , then I think You can't do Mom route 3.