There is nothing wrong there. Her eyes are red, and because of the sun, they look reddish-orange. Here is a link that will tell you everything about her: http://strike-the-blood.wikia.com/wiki/Asagi_Aiba
On that site, it says her eyes are red.
Right now he cannot control 3 Familiars, it's the 6th, 8th and 10th one.
Those are the ones he got so far:
Season 1 EP 4
- Control over 5th Familiar
Season 1 EP 8
- Control over 9th Familiar
Season 1 EP 12
- Control over 3rd Familiar
Season 1 EP 16
- Control over 12th Familiar
Season 1 EP 19
- Control over 4th Familiar
Season 1 EP 22
- Control over ...
Looks like that is all there is for the 2nd season, with only 8 OVA episodes. The MAL page does not include any alternative versions or episodes for the 2nd season other than those. The 3rd season is also similar; OVA version with 10 episodes.
So to answer your question,
According to Wikipedia and from what I remember,
You can read more about it in these links: