As the author of the story,write down your experiences of the day in the form of a diary entry..

some points that could help you :

1) you can start with :

dear diary,

how should i describe this day - a thrilling or a fanatic day ?

i literally felt that i lost my Lavinia and my cook too ....

2) you can write about lavinia doubting and quitting her husband and running away to her grandma's place :

Lavinia had started thinking that i have an external marital relationship after yesterday's ouija party . poor thing how would she know that i was actually trying to protect her from the ghost .

3) you could then write how gladolia the cook was scared of the ouija board .

4) then you can write how the author was going to burn away the ouija board .

5) entry of the ghost 

6) author trying to stop his wife from seeing the ghost whom she saw .

7) Lavinia's reaction on seeing the ghost (she was not scared but talked to the ghost ) and the author being surprised with her reaction.

8)how everything was sorted out and how the author got his ghost story .

i think it is enough.

hope it helps