In formal writing and communication, the sentence "Mom said she thought Maria had been treated wrongly and that she should stick up for herself." is more appropriate. Although wrong and wrongly are both adverbs, some writers consider using adverbial "wrong" as incorrect, so you might want to play it safe and use "wrongly" instead.
Pearl Harbor is the event that spurred the United States into officially joining World War II. Unfortunately it was a sad even of being boomed by the Japanese forces without warning on the Island of Hawaii. <span />