Thanks for looking! I've ordered the microfilm for Uppingham, but if it holds true to form it will take a couple of months before it's shipped.
This Susanna married John Harrison, moved to Redmile and Eaton, Leicestershire, had a daughter named "Mary Arabella Nutt Harrison". So there is a good chance that besides the mother's name being Mary, that there is an Arabella in her lineage.
Thanks again for your assistance Croyboy97!