Ancillary probate and informal probate

Please define what is meant by ancillary probate and informal probate.  Frida, whose husband Bob died suddenly of a heart attack, has heard that “informal” probate, as its name suggests, is less complicated. Frida and Bob live in Florida, where Bob owns a separate condo/investment property that he’ll be leaving to Frida.

Bob and Frida also vacation to South Lake Tahoe, where Bob owns a cabin he inherited that will also be passed on to Frida upon his death. Can Frida proceed with informal probate? Why or why not?