The Ouija Board is a toy which is sold in toy stores. Results are nothing but imagination in the user's mind.
My mum done ouija board and asked who she would marry, and it came true. It was the exact name. What does it mean?
That the Ouija board knows and sees all
That your mum probably knew her husband to be and subconsciously guided the thing to spell it out.
Believe and Receive.
Conformation bias . . .
You would be surprised at the statics involved in this coming true . . . It isn't as "Magic" as it sounds.
The probability of meeting a man with a given name depends partially on the name you came up with.
If the name was James, there were and average 97,000 men in each state in the 1990 census.
If it was Wade, there were still 1,300.
And since the game gave her a name, she would be favorably disposed toward anyone she happened to meet with that name---so it could be a self-fulfilling prophecy.
But to answer your question, I can confidently say that it means nothing except that your mother is apparently married..