In close range, depending on their timing of popping their Magic Marks on you, Moji can deal up to 1000 damage per second. Never give her a chance to flank and make sure to focus her down after she pops her Magic Barrier and scampers away.
Challenging Inara is unlikely to end in victory since you're a flank. Warder's Field will shut you down instantly. However, Inara is a high priority target for your Ult. Just make sure the area around her is moderately safe before landing the treat.
There isn't much you can do against her ult, but if you get hit by dead zone, Magic Barrier will cleanse the effects instantly. Since most Willo's run Nightshade, re--position out of dead zone and make use of Toot and cancel scamper against a wall.