Dependent not attending school for a semester and COBRA?

[Guest KGibson]

A dependent child did not attend college during the summer, and due to financial issues, worked fall semester, but will return to school in the winter. I know that there is something relative to an allowance for a kid in college to continue coverage when taking off for summer type of scenario, with the intention of enrolling for the following term, but is there anyway to extend that until winter term? OR Did they loose all COBRA rights because of failure to notify the plan within 60 days from the time she knew she would not return in the fall?