Battering Ram. Engage with shoulderbash or wait until her Q is down to slap her with it. Poor mobility means you can knock her into corners to finish her off. *Do not ult before her or in her presence.*
Ash aint safe from your ult during hers, so if you see an Ash ulting on the point for the sake of touching, use your ult to prevent the team from regrouping fast and deny any potential pushes.