edit : forgot to include details.
Car is 2.4L 99,950 miles. Plus its Supercharged.
So lately I noticed i've been leaving small spots after a long period of time with the car sitting. So I took it to a shop and they jacked it up and we looked at it. I thought I was leaking oil so I suspected maybe with the cold just starting the drain plug was faulty and letting out some drops. Well the guy and me looked at the pan for the trans fluid and it had moisture around it and he said with the car on from the rear of the pan you could feel air flow.
So I figured alright simple fix the gasket is just on its way out. So they changed it for me and I guess there was quite a bit of fluid missing.
So I parked my car in a different spot last night after getting home (10 minute drive) to see if I could find any spots underneath in the morning. So I go out today and move the car and there is a pink tint in the snow (trans fluid

) It wasn't that much but still.
My questions are:
1. Since the car was only driven for 10 minutes since the change is the gasket still developing a seal ?
2. Where else can I look to find this leak? I don't think I have a hole in my trans because i'm not running through a crazy amount of fluid but could this possibly mean it's on it's way out?
3. Should I take it back to the shop and have them inspect it?
I am driving the car for a snowboarding trip at the end of December up into wausau wisconsin, it's about 6 hours one way so I need to make sure the car is going to make it.