My aim is not to discourage you! IMO Vanessa is actually a very good base.
The only thing is she need more diversity in her moves (hopefully her backfist, some kicks and her throws from FForce)
I think Miru have some plan to create custom anims for her.
The idea is certainly not to restart the character, don't worry.
I know what it is to restart making sprite because coding something is not possible or too hard to script. So, I would never suggest to restart this work to someone.
IMO, just complete her anims with these attacks would make it very good.
BTW, what is the button layout ?
Not the regular 1 attack 1 jump ?
Could be nice to have something close to the initial game even if this is not identical