It will turn out fine. Be patient.
My 12 yo daughter has been shooting for 2 years now.
On Saturday i adjusted her draw length from 21.5 up to 24 and she got to experience some of the same issues with increased draw weight and a slight regression in precision.
My response to the situation is
1) explain that it's normal to get your aim right again.
2) go back over the basics (loose grip, anchor point, breathing, follow through.)
3) treat it with good humor. Kids are perceptive and pick up on our emotions easily. Don't allow anything but positive to show on your face, in you body posture, or in your voice.
When Anya acts discouraged after a practice round i try to crack a joke and also remind her that getting good at anything is all about repetition.
In the long run our kids just want to spend time with us and they want our approval. So, be patient and have a good time.
Best of luck.