WW post D (Thanks BenB part 3)

[Mumin]

Hi everyone!
Short update and 2 questions.
I played golf for the third time this season today, that's definitely a record. Uually I play less than 3 times per season.
Went so-so but had a great time. Also, less mind movies but I think that is mostly bc I know she is with the kids this weekend.
Work has picked up this past week and I find it a bit hard to focus when working from home. Especially now that I have taken it upon myself (mostly because I want to) to do all household chores 1-2 times per week. (W does way less atm)
We basically haven't spoken to eachother at all this week but when we do its like we have this weird vibe.
I am a bit neglecting I guess. She tries to sound nice and make conversation. But I really don't want to and am a bit angry at her still. Do you think I should try to stay positive/neutral towards her? Rather than a bit avoidant and neglecting..

So the main question.
In just over a week D2 is turning 3.
Given Corona there wont be a party but I have invited her best friend to come over (with one parent) if they are healthy.
Still haven't told W about it since it is my weekend with the kids and since Corona nothing is for sure.
Considering telling W that we will have a bit of a birthday party for D2 on Sunday. Not really sure what I want but what is best for D2 goes first in this case. We all do still live in the same house.
How do you think I should approach this? Should I even tell her?
Also, my sister might come as well and W MOS DEF will not want to face her.