Hi, I have been where you are. The last few months I wondered how come I wasnt the one to pull the trigger...
180s: you have to try 180s that are good for you. Not things that are different but "worse" you hope she will notice. Calling your baby IMO is a good example of a ..."poor" one. You missed talking to your baby and she probably thinks you are an insensitive father. 180s should be breaking bad habits or doing something they would think is out of your character, a surprise that would leave them wondering, not getting them mad.
LL, what is her love language? You should try to adjust acting having in mind her love language and if gifts isnt hers, you have to realise she will not feel loved and wont even miss what you did the years before. On the other hand, I agree, dont buy her anything, maybe a card from your baby or something very simple.
The way you decsribe her she is full with resentment and anger. These feelings have to subside before you can even hope for progress. Maybe you staying away and dark will give her the chance to see it wasnt you that caused all this but it's her own problems that she neds to deal with. Stay strong K