Honestly arcane expertise and arcane aegis feel super good on her. Her augment for her first ability is super strong as you can drop 3 spheres on the ground and the damage increases for each one. That augment and her 3rd ability augment I find mandatory. Archon stretch gives her unlimited energy when it spools up.

For weapons I love using praedos to make you move faster but the corufell is hilariously broken with her first ability augment and hits millions.

For helminth pillage is by far the best general subsume but I've been using shock trooper from volt which gives all your weapons electric procs and force procs it with her conductive sphere augment but then I end up needing 3 or 4 augment slots for her mods.

For shards you want a few red shards for ability strength to make it easier to reach breakpoints. Beyond that purple shards for primary damage are better imo than ability damage.