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.
It's tempting to rush a Grover, but unless isolated, he can sustain long enough to survive the fight. Be sure to close the distance between Grover, but prioritizing cauterize will finish the exchange much faster.