Well the last time she saw her family as a child was when she was being chased by Shield. And then she got turned into a child assassin. So I don’t think so

Yeah, on her end, it would be a tough sell. Though Coulson's team literally made a hacker set to take them all down into one of their most loyal members so...

But she didn’t have any prior hatred towards shield besides the redacted files with her parents which is the reason she joined

about the chase when Yelena was younger; from what I recall, Yelena was never told who. and I take she never found out who.

also, I do not recall any opinion from her about SHIELD; nor SHIELD being brought up in any of her scenes (movie or show).

There was a shield logo on the truck

It is a possibility she could have found out, but also the same amount to have not. I would think they would want to make sure she didn't know. Ultimately to keep Natasha from finding her all those years.

I wish Yelena would meet Spider-Man, that Tom Holland wants Spider-Man and Black Widow team up in the MCU

Funny thing is the two have indeed fought briefly.

It I guess it depends on if she joins Valentina's team or not.

But if she doesn't I think it would be nice to follow in Natasha's footsteps as a S.H.I.E.L.D. agent

Yeah, true. They also might be doing Dark Avengers/Thunderbolts.