I genuinely don't understand what there is to be "worried" about. She doesn't look gaunt, her arms and legs have a solid amount of tone to them rather than looking loose and deflated (+ I love the little bone peeking through her shoulder), and she's still within the range of slim that is widely socially acceptable. Obviously she's not up to SG standards but I still think she looks pretty good, especially since she's so short.
All this outrage is just fatties mad that "one of them" got their shit together and started to exercise some self-control. It really highlights that they have no excuses, ESPECIALLY since Emilia also struggles with chronic illness, which is something that all these "curvy" women love to fall back on as a reason for their extra weight. I'm cheering for her + looking forward to seeing how she'll look in the near future