Oooh okay, here's my theory.
Hmmm I get the feeling that she would be unusually calm about the situation, wanting to not cause any more stress to her family by being emotional herself. Once she knows that they are safe and are okay, I get the feeling that she would want to hunt down those responsible, being driven by the upset and anger towards those who tried to hurt her family.
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What happened to Wraith's mother?
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Answer spoiled due to the fact it's very dark, mentions abuse and death,
You were pretty close in your guess ^.=.^
Wraith's mother almost died during childbirth, which left her very weak and bedridden for a good year or so, this made keeping Wraith alive very difficult as she couldn't produce enough milk to keep him healthy, so he was put onto solid foods a lot earlier than he should have; though his teeth grew in quicker which helped this whole process. Due to this whole situation, Wraith was never given a name, he chose his own name when he was older.
However when Wraith was 3, this is where his father started to verbally abuse him, often calling him a parasite and wanted nothing to do with him. His mother was still weak but at least was getting out of bed a few times a day which made Wraith happy though his mother didn't seem to want to have anything to do with him, it was almost like he didn't exist. Tension between his parents got worse, they argued more and broke things when they were angry which scared Wraith and caused him to hide in nearby cupboards which were his safe spot.
This continued until he was 5 and that's when the fights got worse, his mother was stronger like she had been before she had Wraith, but this seemed to make things worse as the two parents got physically violent with each other. Wraith was hiding in a cupboard when he watched as his mother screamed that she "never wanted a child" and that Wraith was a mistake and she didn't care about what happened to him. During this argument it later came out that his father had caught her cheating on him with another man, but also that his father had been cheating as well. This fight ended up with Wraith's father killing his mother and hiding her body in a small room within their apartment, this is the same room Wraith ended up locked in until he was 18.