keep the ag-no3/na-thio stock solution ratio the same as your current ratio (if you change the ratio, you want at least 1 ag sol to 4 or more ts sol [SA says that Ag-Thio is maxed at 1:4]). In your case because she hasn't turned with multiple applications, go with a stronger solution or less dilution the next round. Maybe 1:6 dilution with ro/distilled water instead of 1:9?
I've burned the crapola out of some leaves with the sts, and it still produced viable...wasn't pretty, but it worked. Point being, you have a lot of room to play with in terms of increasing your solution strength and still get a reversal and viable pollen.
No leaf spotting or burn here.
I did screw up and turn my timer off so they might be revegging.