You won't be able to read her mind, so don't drive yourself crazy trying.

My advice is to just proceed cautiously and with strong boundaries.

Don't share anything that could be used against you at work or anything you don't want the whole workplace knowing about.

If you enjoy the social interaction, there's no harming in enjoying, but just keep it light and casual.

If it develops into a friendship, then cool. But if it turns out that she had bad intentions, you'll be safe because you didn't share anything too personal or do anything that you were uncomfortable with.