Looks like she had a boob job so obviously she's not against surgery
With that said, I used to follow her on IG back in the day and the dude she's with is a legit fitness guy takes training seriously but more importantly looks to be on steroids.
Combine that with the fact that she's maybe 5'4" at the most and it means she could actually make alot of progress just lifting properly, eating more, and getting a little help from that vitamin S. It's way easier for smaller people to look bigger, 20 lbs of muscle on a 5'2" woman vs a 5'8" woman is a huge difference.
Still coulda got some help from a surgeon, when your body is your business plan folks will do what it takes to stand out. But even then her physique is still a mix of factors. Basically at the very least she didn't just go to Dr. Miami and call it a day like the stereotypical lazy IG chick