Thanks for writing your query.
is usually associated with weakness after an attack.
Special care should be taken for nutritious diet during fever as well as after it.
Fresh fruits and vegatables should be taken to increase the immunity.
You can give her vitamin preparation containing Vitamin B complex and Vitamin C
along with a probiotic
Protein rich food will be beneficial. Egg is a good source of proteins
Usually it takes 7-10 days for complete recovery. Proper rest will speed up the recovery.
I hope this is helpful to you.