Good to see life is turning a new leaf for you. I would say that never let your guard down in a healthy way for yourself - as in be as neutral as possible and have a healthy mindset of skepticism, but not let it go over into paranoia or becoming neurotic.
I am not sure if I got the give your W 'benefit of the doubt' advice kinda vibe here. I think what most people were suggesting is that instead of going straight to the negative reasons why she might say or do something, just stay neutral and take it at face value. Not saying she's turned around for the positive either - that takes consistent action over time and you'll know it if it actually happens.
I'd say that staying neutral is probably the best way to be about it - don't assign it a good or bad meaning. It will help you keep your sanity.
