she frequently suffer from throat problem with cold

Warm water to drink. Do not give bath and send her out. Wear slippers. Oranges, lime add sufficient Vitamin C try to include in diet. Avoid curd, cucumber, guava, banana, milk after 6 pm.

Curd has a lot of vit C please give it regularly through out the year and caugh and cold frequency will reduce. Also for now go with what Lynette has advised... for hot water.