At time of release, Rita was considered a low tier investigator, with her best stat being the comparable weakest, and no great card pool. Evading and doing a bit of damage, with her ability and the Ornate Bow, was the best she seemed to be able to do. But her access to Tricks shaped out several ways, she is interesting to play nowadays. The events from the Winifred Habbamock starter deck, namely Pilfer and Sneak By, gave her a first option to investigate using her great stat, and some economy to play this card. Although she also got Easy Mark in "The Dream Eaters", Pilfer was still too expensive for her, in particular in the upgraded version, that can be potentially played once per round. Innsmouth (more precise regarding the old release model: In Too Deep) came and brought Breaking and Entering (0), as a cheaper option, that was also more suitable for lower player counts, and synergizes well with her ability.
"Edge of the Earth" added with Crafty finally a reasonable way to pay for the endless replayable on oversuccess suite of Wini-Tricks (aside Pilfer (3) also Cheap Shot (2) and Slip Away (2)) to investigators with no access to Chuck Fergus. It also gave Rita a fancy new bow, that does not need reload actions, and several new Tricks, the greatest for her being the Sweeping Kick.
And then came "The Scarlet Keys". It added Breaking and Entering (2) to the set of "recurable event upgrades", introduced the first Trick assets with Disguise and Dirty Fighting and made "investigating with " a thing feasible for her, thanks to expanding the options for zero shroud. I tested her mainly in the "main cluever role", you can check my deck here. But I think, she should also fit nice into "main goon" or "flex". Disguise outclasses either version of Slip Away for her, and Dirty Fighting boosts her to 5 (or with a bow to 7 or 8), as long, as she does, what she's supposed to do anyway, while also giving her the action back, she took evading. I think, she grow now an excellent investigator, who can be built in many different ways to fun and successful results. A good example of how somebody can grow with their card pool.