I tried to get the noise level down and still have a good image.
ISO 6400, 120mm, f/4.5, 1/160s.
UPDATE - You will see below (post 23) I was in contact with Teamspeed and he edited my RAW file and provided the following feedback
"Here are my, hopefully, constructive criticism to help you along the high ISO journey. These are either steps or suggestions to help you. (here he is talking about DPP Canon users)
1) Change your colorspace on your camera to sRGB instead of adobeRGB.
2) I took the contrast back up a bit.
3) I took the sharpening down a bit (-1)
4) On the 2nd tab, I bumped the sharpening up there a tiny bit
5) On the NR tab, I lowered the chroma noise to be close to the lumin. NR value
6) I set white balance using the numerals on her shirt.
7) When you shoot to the right as you did (which is great btw), you then want to bring the exposure down in DPP, so I brought the exposure down just a bit, around 1/3 to 2/3. You can look at the raw I sent to you.
I then ran the file through my personal action to clean up the file. I would say to reduce your NR just a little bit. Having some noise isn't bad, and it helps to leave detail."
For those who would like to see a side by side here is the link to Teamspeeds smugmug