I kept mine on default parts, pumped HP and WLK (lol) and balanced her TEC/STR to 20. This is a vanity build and should not be copied.
I think her best option is high FLY and short boost/quick land. As for weapon tunes, a lot of people use a paralyzer on her main, but personally, if I were to make a performance build, I'd skip the para tunes (or any weapon tunes on the main) and get her a secondary handheld, that she can use while Deadsect is active. Keep in mind, tat her Soul rod's main is her primary source of Wb energy.
You can generate a lot of WB energy by using the dead recalls subweapon to. Either put her HD (=WB activation) on the active slot and use the e-change to use the Soul Rod Sub, or put the weapon into your active slot, the HD is then the next weapon to appear in your weapon menu (if yor only additional subeapon is a cola or the like).
TEC alone sounds sorta questionable. Her main isn't that awesome (aside of the waste booster of course) and you could probably make a better SUP mecha in that case. She used to have the ability to gain WB energy while the bit was connected and back then, yes, high TEC and just some extra STR were ok, but both the pursuit bits and her WB gain mechanism got nerfed pretty well, so I wouldn't tune TEC alone.
Be careful with her bit activation, if you're stunned in a certain moment, she'll use her flinching animation and the entire WB gauge vanishes, CV would be helpful here.
According to Winty her main purpose is to accel roll into people's face while dead sect is active *-*