>>We don't know if it's anything to do with the man on the bus yet.<<We don't know for
certain its the guy on the bus, but a few things fit together: the timeline - Susan said she had an appointment at 5:30; she is on the bus, sitting next to a man and is speaking to him, and they got off the bus together one block from her house at 5:30. Timeline of killing fits in with this arrival time. So far, guy on bus is the best suspect.
>>Could he have been already in the house waiting?<< He would have used a key. How did he get it? He would know Susan would be coming home. To the best of my knowledge, this is not an active theory the police are pursuing. How to explain this theory with the facts known? Doesn't fit what we know so far.
>>Susan was beaten and thrown down the basement stairs I read. The killer is very angry & violent IMO. It may look like Susan was the target maybe he was after Sarah also why stick around waiting for Sarah to come home? It's possible they were both targeted IMO. << I disagree. The killings were very different in MO. Susan was beaten sadistically, likely sexually assaulted, and then thrown into the basement and shot at close range in the head. Her body then was handled at some length by the perp - he stripped her, doused her with bleach and laundry products; more, we don't know. Some time passed between Susan's arrival, and Sarah's arrival - perhaps 2 hrs. Sarah didn't even get a chance to take her coat off, when she was pushed/forced down the stairs, and shot in the head at close range. The perp did not manipulate her body in any way - did not strip, did not douse with bleach or laundry products, so whatever evidence of himself he felt he needed to conceal from contact with Susan's body, he did not feel the need to do the same for Sarah.
Question is - did he wait for Sarah, to get her car to steal, or did she walk in and surprise him?
I agree - killer is very violent and angry. I have a terrible feeling a psycho/serial killer has arrived in Pittsburgh. Fantasies of control. Susan may not have been petite and easily wrestled, BUT Susan was vulnerable by the way she trusted "marginal" folks.
>>Could it be a revenge crime? of some sort anything to do with former clients, did the Jewish School annoy a Neo Nazi




?<< No reason to believe this. I know the neighborhood. A neo Nazi on foot, or on a bus, would stick out like a sore thumb in this neighborhood. However, a scruffy, homeless-looking guy, a drug addict, would fit right in. No WAY a Neo Nazi is going to take the stolen car to Whitfield Street by the East Liberty library, in the blighted business district of a black neighborhood! East Liberty Presybyterian Church is not Neo Nazi destination. Off the map. Also - no activity against Jewish persons, Jewish institutions in Pittsburgh, or this school specifically. One would also expect a Neo Nazi would leave a "signature" of some kind at the crime scene - swastikas, SS mark, etc. Neither of the women were Jewish. They were Catholic. A Neo Nazi would have had to have figured out where she lived, followed her on the bus, etc etc - too complicated of a theory to make sense.
A person she found sympathetic, that she would have had the instinct to help, and with little caution on her part - that's the perp we should expect.
My theory - it's a guy from the bus. Victimology has it that the girls were compassionate and caring, cared very much for the underprivileged - gave everyone the benefit of the doubt, gave everyone a second chance. I know the area. I know the bus. "Locals" can be very chatty and try to insinuate into your life. There are marginal types all around that try to make conversation. "Are you married?" "No, I live with my sister, I just moved here a few weeks ago." -- That is a lot of useful information for a predator. If she seemed liberal in politics - it is safe for the perp to assume no guns were in the home. If the predator posed as someone who needed help/support/friendship - Susan would have been the one to offer it freely - that is what all the memorial tributes say about her - she was open and generous to strangers, and often those strangers were in marginal areas, i.e. inner city Chicago.
I am basing my assumptions about the perp on what we know about the VICTIM.