Porkdish: You can buy herbs for your tech-healer girl, personally I just learned the healing skill myself since other than those very low level skills, she's grade A useless in a fight.
Better than buying, if you can handle random encounters just wander lush areas of the map. Almost all random encounters will have one type of herb growing near the encounter space. Its quite easy to stock pile early in the game and a single pairing of the right herbs nets a lot of healing kits.
As a tech focused character your PRIMARY goal in the game should be tracking down containers that don't respawn their contents (such as the abandoned factory in Tarant the gnome asks you to clear), then you can time-trigger merchant inventories and buy-buy-buy, stockpile your bits and pieces in those containers for use at a later date.
A tech character is always scrounging for odds and ends, the whole game is a challenge from start to finish to make resources last.
The easiest run through I ever played was a solo rogue backstabber. Stun costs practically nothing to cast and your knife doesn't run out of ammo. Obviously you could only play like that in turn based mode, but I don't know anyone who enjoys the 'real time' combat mode.
I didnt know about the Tarant Warehouse containers, just the Wolf Cave ones. Great tip, cheers.