Thank you for your query.
Your child should be assessed by a speech therapist who shall guide you for the correct course of action. Regarding her problem in jumping I would like you to wait for a few weeks more and then reassess. At times it is a developmental delay which can be the reason for this.
I would not advise you to give L-carnosine
as it will have not effect on either her speech or the jumping issue.
I hope I have answered your query to your satisfaction.
Wishing your son/daughter an early recovery.
Rajiv K Khandelwal