Answer:
She should inform readers to first buy smoke alarms that are larger in size. She should also tell readers to mount the smoke alarms in walls or ceilings.
Step-by-step explanation:
Since the instructions written by Sheila are meant to guide the readers on appropriate ways of installing smoke alarms, information on the right size of alarms to buy is vital. Also, information on the right location to install the alarms is also essential. Telling the readers to ignore the loud noise produced by these alarms is wrong because that sound should alert them to the fact that there is smoke in the house. Therefore, this later instruction should not be included.