Based on my interpetation of your observations, the MAQS treatment killed your queen. This is a relatively common occurance and the primary reason I do not use, nor recommend, formic acid treatments. What have your daytime high temperatures been like? I see thet Redding is supposed to be over 100° in the middle of next week. Formic should not be used if the temps might exceed 85°F. Check back in the hive in a day or two and make a concerted effort to find eggs. If you do not find any, either give them a frame of eggs from another hive, or consider purchasing another queen. Sorry that this is happening.