I bet I can guess which side they were laying on.
You can get a replacement for that Super Sport crank from any thrift store Varsity or Continental for very little money (unless you want to upgrade it anyway).
The Super Sport is a nice bike, but doesn't seem to bring much money in the ladies format. Typically less than $75. It's a good thing your Mom wants to keep it.
The Caliente, being a lower end Schwinn and from the '80s would not usually bring much more than $50, but pink is back baby!!
Find the serial number on the Super Sport (on the head tube of the frame where the front fork enters), go here and find out the year:
http://www.geocities.com/sldatabook/serial.html
Then go here and pick the model to find more detailed info:
http://www.geocities.com/sldatabook/models.html
I'm afraid I can't help you with details on the Caliente -- I'm living way in the past.
Have fun,
Bob Hufford
Springfield, MO