Not everyone was particularly receptive to Jake's feelings, but Will and the women in his group did not miss this radical change in mood. Jake never really exuded much joy, at best a listless phlegm, but that was exactly why his mood swings were so easy to spot.
At that moment, his glare and the explosive growth of his fangs and claws left no doubt as to the nature of his true feelings. A barely repressed murderous aura was leaking out of him, the Soul Glyph Apex Predator expressing itself in all its splendor.
The veteran soldiers in the base were stunned, but sadly not everyone was. Ruby's aunt bore a solemn face despite her tough disposition, while a number of humans visiting Thelma for the first time were about to faint and were shivering from sheer terror.
There's not that much going on in this chapter, but it's all the implications that make it interesting. For those who dreamed of a fight, revenge, or even a real explanation of Ruby, it would have been far too simple.
That doesn't mean she doesn't have her reasons, of course. Those who would like to have a chapter with Ruby's POV, it will happen in the future but it is too soon. For now, you are free to find reasons for her behavior or just hate her.