Doesn't seem so.  Fire started from appliances or smoking in bed would be slow burning and would allow one to extinguish it.  On the other hand, fires from liquid combustibles would be instantaneous and spreads quickly.  The fact that an arson dog capable of detecting flammables was brought in adds to the suspicion.  She'd better have a darn good lawyer if it's proven she was at fault. Now, it's all speculation and reports from neighbors.