It's funny how she was preening even thought there was no feathers. It does not seem to affect her she looks like a happy little lovebird. It is interesting to see what they look like without the feathers.
I seen in the comments that she has/had psittacine beak and feather disease. I guess she had the best life she could have seems like she was loved a lot. I found what seems to the original youtube channel and the last post was two years ago.
Well seems there is even more to this story. I guess Rhea was given to another person that had a pair of lovebirds with the same condition but there were comments that she passed away about a year ago now..