I wouldn't liquify Anything! That's who she is. I would have positioned her in a more flattering pose though.
3,4,5 are ok. It would have been nice to see them smile.
It's not photojournalism. A studio works to please the client. A typical client would want the liquify, given the choice. If the *client* prefers no retouching, that's the client's choice, and a rare one.
In the end, it's neither your opinion or mine that matters. Portrait photography isn't about realism. It's the client's preference. Brutally honest is seldom the client's choice. Give them the choice for "too much", if that is what they want. Although I frequently exaggerate effects for illustration, it's simple compromise with less, from your comment I'd wager you'd be surprised at how much idealization the average portrait customer prefers, given the choice - and not just women.
I haven't done portraiture for money in quite awhile, but my usual rule of thumb was that anything where the client couldn't be sure if they just looked smokin' that day or it was Photoshop was a no brainer, do it. The amount of liquify suggested here I think goes past that. If you retouch the crap out of someone there is also the possiblity that they take it as another way for you/society to call them fat/ugly/choose your pejorative. You should definately find out what they want, maybe by showing them some before and after examples from your portfolio. My choices: 2,3 of TtD, 1,3,6 of the seniors, although 3 looks a little flat on my monitor.
