I’m assuming you do have your Input Profile set to the dcp you provided?
It’s possible that you may be asking too much of the shadows in your image. Pushing 1.2ev and then doing some further pulling around is possibly what has led to the ‘plastic’ feeling of the colors. To combat this you could probably drop the saturation (or vibrance if you wanted) and then re-introduce some hopefully more pleasing skin tones back into the image.
Some higher level thoughts, though.
It seems to be an environmental snapshot - so much of the context of the image is that it was shot in the evening, when the light is a bit darker. Pulling the EV up until it almost looks like a shot in the afternoon may not work well (not technically, but that the feeling of the time/place might be lost or diluted). In short, don’t worry about trying to make the image something it is not. Also that blue LED is a real pain. 
Note that you may feel the Olympus software gave you more workable results, but you’ve pushed your image in RT much further than the Olympus software did.
I had a go with it quickly I only pushed to about +0.6EV to lighten things up a little bit for you. Not as bright in the face as yours, but I was trying to keep the faces just a little brighter without nuking them (or the tones). I did add in some color curves (a portra-esque curve that is in another thread).
If you play with this, as you lighten the faces by adjusting EV or lightness, try turning up the highlight compression to keep those tones in check a little bit.
P9040307.ORF.patdavid.pp3 (10.2 KB)
