No, there is no proof that she is thinking about him. You just see a panel of Stain, there is no proof in the manga that she is actually thinking of him. Likewise in the anime we just get a static scene that show Stain. So there is no proof at all there.
I wont get into an edit war with you. Just stop adding stuff that are just viewer speculation.
She doesn't like Stain. Stain was just the catalyst that got her in contact with the Villain alliance, she says as much in a later chapter. The problem lies with the translation itself of when Himiko talks with Ochaco. Himiko does not outright say that she is in love. She says that she can recognize Ochaco as a girl in love because Himiko is a maiden herself that knows what it means to be in love.
Himiko never ever says that she ever likes Stain. She has just insinuated that she wanted to become him.
It however does not matter. This wiki is supposed to inform people of what we KNOW for a fact, not what we we speculate on. Himiko has never had a scene at any other time that shows what she is thinking and this was pretty much one of her first appearances. The scene was shown from Ochaco's perspective. So the panel was not part of Himiko's pov but rather Ochaco and the viewer. I.E, it showed us the kind of guy that Himiko was talking about. It did not show us that she loved him.
These two quotes pretty clearly connect the issue and imply that Toga likes and/or liked Stain.
Nono, she said later that he was just a catalyst. She just found him to look cool when she saw him bleeding. She did want to kill and become him when she arrived, but she joined the alliance because she believed he had been a part of it.
Himiko like people that are bleeding. It was never said that she likes them as in "likes". So the Stain image was not to show that she liked "him", it was there to show what type of person she was talking about.
The scene was not shown from Himiko's pov. The whole Stain flash was to show us viewers what she was referring to when she was talking about "love". Why is this so hard to understand? The wiki as it is written now states that it shows her "thoughts", but it does not. It just tells us viewers what Himiko was talking about when she was talking about love. So wheter or not she actually did still care about Stain, there is nothing that proves that the panel showed her thoughts. Rather, the panel before focuses on Ochaco's expression!