She was good, but also totally interchangeable with any other character, which I think is just the nature of Mage Cannoneers as a class. The might and accuracy of mage cannoneer cannons are so bad (most are punching at iron sword might with silver axe accuracy), I feel like no matter who you use you get a useful support unit who can apply helpful debuffs at range, but never kills anything unless you spend big. She was very helpful setting the table with toxic blast and Corrin freezes for most of the run. When I switched to Reprisal + Micaiah + Time's Pulse, she started actually killing things. Both are nice sets for any unit you feed the mage cannon.
