Pepper + Natasha
Natasha respected Pepper more than most people, first it was because she had been able to work with Tony Stark and not kill him and then once she had gone in undercover it had developed into an actual friendship. One of the rare kinds that Natasha made an effort to keep hold of.
"Enjoy them, just spend time with them and have some fun" Natasha suggested, after all they were only ever around for a short time. Even if they were impossible children it didn't mean Pepper couldn't just embrace it for a short time, if she wanted to of course. "Alex is amazing. Bruce and I are hoping he's going to be in our future. I adore everything he does, he's such a mix of the two of us even though he's adopted" she admitted softly.