Carlos,
How did you convince her to go? I have yet to get my wife to go near the plane. Over 2 years with my PPL and can't get her to even sit in the thing. Kids all love it. JD
Make it an adventure (albeit short/easy). Get a sitter for the kids if needed. Go someplace close but just far enough that the drive would be worse (eg. 3hrs drive vs 1hr flight). Stay over night so the trip is more about the destination than the flight. Bring something with for them to do during the flight (read, watch a movie, etc). At first she will associate the plane with "going someplace" instead of "flying". Maybe drive separately to the airport so she doesn't have to wait out fueling up, preflight, putting stuff away, etc. Fly low for a bit for the scenery but then climb higher for smoother air and less of the "ground is so close" sensation.
All this describes what we did for our daughter last year. Basically eased her into it. Now she's happy with something as simple with a few laps around the airport. We had made a mistake right after we got the plane. Flew all out, down low to a mega busy fly-in. Rough air, about 1 hr, really hot inside, etc. Too many initial bad associations.
Here's a flight she loves: I go to the airport early and prep the plane and have it all ready. My wife shows up with our daughter about 30 minutes later. My wife is PIC (until I am signed off
) so she does her own preflight while I take our daughter to the nearby bathroom. Overall time from her showing up to starting the engine is less than 20 minutes and she's busy half of that. She's pretty engaged looking out the window during taxi and about the 1st 500ft climb out. About then she'll fire up her iPad. I have a battery powered mobile hotspot with 40 movies and about 100 TV episodes. She plugs her headset into the iPad and "streams" movies. I also have a small battery powered handheld fan (about $15). She uses that if she feels a bit woozy but that is only when its hot outside. Once we climb up to higher, where it might be smoother and less to see below...you won't hear a peep out of her the entire flight. I will interrupt her to eat a simple snack and drink some water. Also (very important) we have those little bags that you can puke or pee in and it dries up. I had her try one at home, she laughed and said "I could easily do that if needed". It was a great comfort as her biggest fear is having to go to the bathroom/puke mid flight. Anyway, 70 minutes later we land and Grandpa drives right out to the plane, she wheels her little bag to his car and we're there. Five hours turns into about 2hrs total. And it is a "trip" to a destination. To participate we make her pack her own bag, assembly her own "tech", she is responsible for weighing all bags to help with W&B and I have her enter the flight pan on the tablet, etc. I have noticed after this that she has way more questions about the panel and the plane. And she loves about 20-30 minutes up front time now.