lying to someone repeatedly is abuse
Welcome to month four, lol. Sounds like the bloom is off the rose and you're seeing each other more clearly. She's giving you information. It's up to you how you use it
She lies, can be passive aggressive, is insensitive to you (and little kids, lol) and she steals and blames you. Sounds like a peach, and she mostly scares you (?)
Pay attention to all of that and choose your next steps wisely. If you are for real scared of her, ending it sooner is prob better. Weirdos tend to escalate and then they're a real pain.