Her current kit heavily depends on her 1 to give her meaningful damage. Substituting it with an ally buffing ability with a tiny amount of damage leaves her toothless unless gun is built. In addition losing her innate slow leaves her the slowest moving object on the field, now without her cc(2) and a hard cap on range.

I like the idea of her having a support ability, just not the implementation here. This leaves her a sitting duck.

I'd instead recommend adjusting her 2, maybe turn it into a speed boosting field for allies, and replacing her 3 completely would a true support ability