I hope you are not giving TOTAL WEALTH SERUM and IMMUNE SERUM together as they relate to different aspect, so should be given separately.
For Fever, please add DFEv Serum ALL CLEAR SERUM BALANCE SERUM.
You can check for black magic, give her water charged with only HANUMAN CHALISA energy.
If she finds the taste of water unusual or bitter or sour or different from uncharged water, it may be Black Magic influence.
You can then give her energy of ALL CLEAR SERUM and HANUMAN CHALISA as frequently as possible.
If she is mentally affected by some event which is manifesting in fever shivering, you can give BACH FLOWER RESCUE REMEDY ALL CLEAR SERUM and BALANCE SERUM.
You can charge her jewellery with SHIELD OF 7 RAYS or HAUMAN CHALISA ENERGY.
SHIELD OF 7 RAYS should be given by default for protection against any negativity