It's rare, but I've heard of people's shadows behaving oddly when there's a strong emotional turmoil or a significant life event. Could be psychokinetic. How's your emotional state been lately? Stress, anxiety, anything like that could possibly manifest in such ways.

You moved into an old victorian house, mate. Creaking doors? Flickering lights? Sounds more like you need a handyman, not an exorcist. As for the woman... maybe you're just not getting enough sleep. Old houses can mess with your head, trust me.