Ploy can fall back to being a flight attendance but if I was in her shoes I would not want to when the kids are small. You travel a lot and it isn't fair to the kids that they will not have both parents. Peter is gone why would the mother take a job of leaving her kids when she have other options. Their kids need one parent with them at all times if the circumstances allows that.
She might have her mom to help raised her kids, but it's not her mom's place to raise her kids for her. If I was in her place, I don't care what people think of me for trying to make as much money as possible to raise my kids. Because if I was in desperate need financially no one is going to help me out on a constant basis because everyone has their own life to live. She might exposed her kids to the media but as kids of a father that is famous, they are already put in that position. Some might not like what she does...but when you have kids to feed, provide for them in every way, as a mother shame and dignity have to take a backseat. She has to make and take every opportunities that comes her way. It probably looks awful in people's eyes but when you have lives you are responsible for, you will do what it takes because all of a sudden nothing is too small or too big.