I haven't seen the interview, but i doubt very seriously that Michelle would consider having a boob job...what would be the point?! She has a spectacular body with gorgeous full large boobs, no need to make them larger, she has been wondrously blessed and is absolutely stunning to look at.
Most of the models who get boob jobs had very little to start with...i speak here mainly of the UK modeling scene.
They have their b-cups turned into d-cups and launch themselves onto the modeling page 3 scene, as Jordan did as katie Price. Of course Jordan is an exception and she decided to really GO for it and has been extremely successful for the last 9 years.
Of course there is another scenario: a model like the gloriously beautiful Veronika Zemanova was well blessed, but began to loose the fullness in her breasts so she decided to have implants to get them back up to where they were [with a little added of course

]
But back to Michelle: i have the impression she is going more mainstream. In addition to the modeling, she is trying to launch a singing career. What you have to consider in these interviews is that the interviewer asks all kinds of questions, and the model gives a provocative response, which is not necessarily a serious thought which is part of a plan.
I hope she stays as she is and that we continue to see 'A LOT OF HER'!