OK but you have been adamant about the Jewelry in your last few posts so clearly this is a big clue for you as you have gone to so much trouble explaining why Claudia wouldnt have gone out the night before without her jewelry on?Clearly not, there are a few factors that point towards Claudia leaving for work in the morning:
1) Claudia spoke to her Mam on the phone and told her she was going to bed at 9 to get up for work in the morning at 5. That was Claudia's intention. Anybody disputing this can only really argue that either her Mam was lying or Claudia was lying. I'm going to go with them telling the truth rather than one of these statistically highly improbable theories that require all sorts of mental acrobatics to make them work.
2) There was no sign of a struggle in Claudia's home.
3) There were no text messages on Claudia's phone to suggest she was meeting somebody that night.
4) Items missing from Claudia's home were those that she needed for work.
That's a simple but effective case for Claudia leaving for work that morning, and it is more likely than the alternative.
If your theory about Claudia walking to work is correct can you explain what exactly you think happened ?