Mimi has a Bada$$ Longcoat? This bodes ill for Junior -- and she's so hungry that the image of a single muffin in her mind's eye can propel her through the window. I don't think Junior has the power or heart to actually stop her, after all the last time she went Crazy for Muffins a Lava Golem was required to do so.
I'm not seeing any glowing effect around Mimi's feet, so I doubt it's her powers -- unless Junior simply cannot see power-based auras. But then why wouldn't he be able to when he's got one of Minnie's eyes, and one with the characteristics of Death? Mimi doesn't seem to be wall-running, though her Bada$$ Longcoat is streaming behind her. I'm fairly sure I don't understand what's going on here, due partially to the perspective.
On the issue of what happens to a soul after death, we know that there are multiple Underworld realms, each with its own ruler, to which a soul can go if they have enough sin on their balance sheets. Further, we know of at least 1 Heavenly realm thanks to the Redeemer, Minnie, and Dee Dee. As Walker's realm is one of the Underworld realms, and it is probably within the Ghost Zone, that means residents of the Ghost Zone probably have a red balance.
Then, of course, there are realms such as Valhalla that are intended as a warrior's reward, and Hel as its balance, at least in the Marvelverse.
There are many options, and whichever one gets used is probably determined by a person's overall soul balance, and not by any particular deed or misdeed. I believe that due to their efforts in saving people's lives, most heroes would have a positive balance. I doubt Blossom having given birth to Mimi because of HIM would be sufficient to damn her, however neglecting her daughter to save the world (and ultimately fail) might give the redhead some red. And this is after counting that she was killed by her own daughter.
I'm fairly certain Raven would have a positive balance, though she wouldn't be as 'pure' as Dee Dee or Minnie.