Wow, that is all very interesting.
Could it be anyone else, i mean if your dad had a message for you would he bother with making dolls move etc when other people are there?

I really have no idea hun, can you maybe sit in a room and ask if there is someone there, tell them you would like to know what they need and you would prefer they NOT break things to get your attention.
For me the glass breaking is a no go, you are willing to connect and do what you can but NOT have property damaged IYKWIM.