Visitor Visa - B2

Hi everyOne,
I applied for USA B2 visa and got in first attempt.
my interview was in the mid of August 2016 @ US embassy Riyadh.
I arrived before time after finger print and waiting in a que.
V.O : Good Morning (He was Young man in his mid 30's)
ME : Good Morning.
V.O : Your passport.
Me : Given
That time I recently came back from Europe (UK, Spain and France.)
V.O : Your had been to Europe.
Me : Yes
V.O : where in Europe.
Me: London, Birmingham, Manchester, Barcelona, Madrid, Paris.
V.O : How long you been here in Saudi.
Me : Replied.
V.O : who is your Employer.
Me: Told.
V.O : Ok
Your visa will be ready in 3 days.

I Got my passport with 5 years Multiple
Then my Wife said She wants to Travel with me.
I Applied for Her and Kids immediately after getting my Passport ( My bad).

She had visited only Dubai before that time.
V.O : Good Morning
Wife : Good Morning
Good Morning to kids.
then
V.o: Your husband;'s Income ,his company Letter, His bank statement
Wife : Shown
V.O: Your Husband's Visa Copy.
Shown
When he saw I recently got visa he immediately refused.
But I continued my schedule and traveled alone although I had been to USA only for a couple of hours. As my main trip was in Canada

Now we had visited Europe on family vacation.
My wife and kids have UK Multiple Visa still valid and a long duration Schengen visa.

what are the chances for my family this time?

Should she Apply again is this good time to apply?