plus, pietro died for clint. i imagine to some level natasha must feel indebted to wanda. wanda lost her best friend so nat could keep hers
Honestly. I feel like all the Avengers assumed that Wanda and Natasha would just kind of avoid one another, but I also headcanon that Wanda basically lives with the Bartons and refuses to go a week without seeing Nathaniel Pietro (and she always calls him by his full name, lbr) so they have to run into one another eventually.
So maybe one night Natasha shows up at the Barton farm and Wanda disappears into her room. No one really comments on it, and Natasha has a good time with Laura and Clint and the kids, but after she helps put the children to bed and has a nightcap with Laura, she goes to Wanda’s room. And Clint’s holding his breath, half waiting for things to get violent, but Wanda opens the door for her and closes it.
Natasha doesn’t stay long and doesn’t say much, just gives Wanda the picture that Pietro used to carry around with him. It’s the only one left of the Maximoffs, and Natasha went to get it from wherever it ended up after the battle of Sokovia. After that, there’s a kind of understanding between them.
Plus, Nathaniel Pietro is going to be the single most protected child in the universe, named after a spy and the man that gave his life to save his father. I imagine so many shopping dates where Wanda and Natasha go crazy and come home with ridiculous amounts of presents for the kids. I mean, if anything, they would bond over how much they love that kid.