Michael Schoch, Answers questions on Noodle
To find out if Academy Of Saint Elizabeth has old yearbooks in its archives, I recommend calling the school at 973-290-5202.
Another option is to try an online service like E-Yearbook or classmates. And lastly, you might consider using social media to reach out to family friends or relatives who went to school with your mother to see if they have yearbooks they're willing to share or sell.
Best of luck in your search!