Mine is 345.15 . Your ayano and my yui are both affectionate anon :) .
The hair happens randomly , she will ask you how her new hairstyle looks . Tell her shes beautiful and you would have unlocked a new hairstyle .
btw , here is a sheet to know about affection levels .
LOVE (1000 and up) =Monika is completely comfortable with the player. (aka the comfortable stage in a relationship)
ENAMORED (400 up to 999)=Exceptionally happy, the happiest she has ever been in her life to that point. Completely trusts the player and wants to make him/her as happy as she is.
AFFECTIONATE (100 up to 399)= Glad that the relationship is working out and has high hopes and at this point has no doubts about whether or not it was worth it.
HAPPY (030 up to 99)=Happy with how it is, could be happier but not sad at all.
NORMAL (-29 up to 29)=Has mild doubts as to whether or not her sacrifices were worth it but trusts the player to treat her right. Isn't strongly happy or sad
UPSET (-74 up to -30)= Feeling emotionally hurt, starting to have doubts about whether or not the player loves her and whether or not she she was right regarding what she did in the game.
DISTRESSED (-99 up to -75)= Convinced the player probably doesn't love her and that she may never escape to our reality.
BROKEN (-100 and lower)= Believes that not only does the player not love her but that s/he probably hates her too because of she did and is trying to punish her. Scared of being alone in her own reality, as well as for her future.