I only asked about the skills because I thought I had read about L6 skills your triple gymmies only picked up this week? Just going off of memory, which is not always reliable LOL
... gymnastics always seems to be be 1 step forward - 3 steps back
. You have it, you lose it, you have it and usually (x fingers, hopefully, please, please, please) for good
. Our gym will move girls up mid-season, but only if they are 95% ready for the next level prior to the meet season starting. L6 is tough as others have stated, and they would just have to be prepared to for the difference.
With that said, talking to your dd's & making a home decision are important, but it is also important to trust the advice of dd's coaches. They will know your gymnasts' abilities best. Unfortunately as heartbreaking as it is, gymnastics is not always fair. Children advance at different rates, and sometimes, sadly, feelings do get hurt. But things usually end up working out for the best if you follow their advice. Maybe in this case dd remaining in L5 will just be able to focus on her and not feel like she has to compare herself to her siblings. Bottom line is trust the coaches that you picked for your dd's. They are the professionals.
Now... It does sound as if they (coaches) are leaving some decision up to you here as well, if that is the case, maybe they will let the girls try a L6 meet, and see how it goes. If they really don't like it or have a bad experience they could always finish their seasons as L5's ... Good luck & Let us know how it all turns out