Ill let her burn but have several in the house by each door and in all rooms. Type A,Size ll, Type BC,(ABC) 5 to 10 lb. with the hose, they are every where if needed to get out, not to mention an emergency window ladder. Beware lucky if you get a minute out of the 5lb er.
A typical 5# drychem fully discharges in about 15 seconds, a 10# about 20sec, and a 20# about 30sec
A 2.5 gallon water extinguisher has a discharge time of about 55 sec and a range of almost 50 ft
ABC's are fine for home and garage, but I would also suggest at least one 2.5 water extinguisher per floor
Most combustibles in a home are class A, so water is almost always the best agent
People are often shocked by how effective a can is in a typical residential fire. Decades ago we always had a "can man", but downsizing has impacted how fires are fought by many departments, and using cans became sort of looked down upon. Today there has thankfully been a resurgence as many departments are rediscovering how well they work, and they are changing tactics back to some old school methods using a can.
Im not saying a layperson should be attacking fires like this, but...
even in unskilled hands they can really be effective and buy the time needed to get kids and pets out. Even if you don't get the fire extinguished, you can really slow a fires progression until engines arrive.
Room fire vs can #1
Room fire vs can #2