Please please do not get carried away by all the marketing hype that's out there. I'm a little concerned that you are asking specifically about Smartlipo or mesotherapy because of advertisements you've seen or heard. Neither of those procedures is likely to be what your 17-year-old daughter needs, given her large amount of weight loss.
And most of the doctors offering Smartlipo and mesotherapy are NOT plastic surgeons at all--they call themselves "cosmetic surgeons" and are typically OB/GYNs, family medicine doctors, or internal medicine doctors or other non-surgeons who have had only a few weekends of training in liposuction procedures.
Please go with your daughter to see a surgeon who is Certified by the American Board of PLASTIC Surgery (not "cosmetic surgery). An ABPS Surgeon is a fully trained plastic surgeon, with a full toolbox of options for your daughter, not just a few tricks that some laser company taught him/her.