Against briar, Her skirmishing power early on is quite high. Keep this in mind when attempting to fight her alone.

When invading a Briar, try to hide in bushes before jumping on her. Wait for her to use her abilities on the camps and then strike her down.

If you’re low or if you see an ally low on health overstaying their welcome, ping and communicate as she will look to get easy kills with her Ultimate R.
 Against briar, By invading a Briar, try to hide in the bushes before jumping on it. Wait for her to use her abilities on the camps and hit her down. If you are weak or you see a weak ally about health stay their welcome, ping and communicate as she will seek to get easy murders with her Ultimate R.