Strawberries are not recommended for children under the age of 2 due to potential food allergies. Also, don’t offer her chocolate because of the same reason. A person’s allergic reaction to a food may be immediate or increase after each time it is eaten. So it is not surprising that your daughter did not have an immediate reaction, but is starting to react after several exposures to strawberries.
You should also consider that the bumps may be chicken pox. Don’t offer your daughter any more strawberries or raspberries in any form, including fruit jams or strawberry ice cream. If the pimply bumps go away and don’t return, she may have an allergy to strawberries which may be temporary until she gets older or not. If the bumps return, make an appointment for her to see her doctor to diagnose the cause of the bumps. If she develops a fever or swallowing problems, take her to see her doctor or an emergency room immediately. In the meantime, if either you or her father didn’t have chicken pox as a child, you can catch it from your daughter.