I don't think she looks bad at all for a 49 year old who made no effort that day. Honestly I see women in their late 20s looking like this depending what they've been up to.
I'd rather see her in a baseball cap to hide the hair on an off day lol.
I don't think her beauty is fading per se - she was in full make-up in the comparison shot. What are people supposed to look like at midlife?