You need to do something if this happens, let your team know it's happening by pinging the lane to fallback, and pinging the person who is roaming, if it's safe to follow and you think you'd win the fight, you can move to help balance out the fight, or if not then look to shove the lane, set up vision or do something to gain an advantage when the enemies return to your lane. Sometimes it can be best to do the non optimal play if it will avoid your team from tilting hard.

Anivia roamed and secured kills for their team, what could you have done better here?

Shoved lane

Followed

Roamed elsewhere

Set up vision

Objective

Pinged

Nothing

Anivia Roamed to Mid Lane

Blitzcrank

Lucian

SRU_OrderMinionRanged

Anivia

Caitlyn

SRU_ChaosMinionSiege

SRU_OrderMinionSiege

Your team lost the fight, what did you do wrong?

Overstayed

Bad Fight

Worse Team

Poor Focus

Late

Bad positioning

Lost Fight in Bot Lane

SRU_ChaosMinionMelee

Your were able to solo kill your opponent, what was the best thing to do in this situation?

Shove Wave

Fall Back

Towers

Freeze

Roam

Ward

Solo Kill in Bot Lane

Anivia Roamed to Enemy Topside Jungle

sru_dragon_air

Kayn

Sylas

Lost Dragon Fight

Solo Kill in Mid Lane

Mordekaiser

Sett

Your team won the team fight, what should your team have done after this?

Farm

Herald

Reset

Dragon

Take Towers

Won Fight in Enemy Topside Jungle

Warwick

SRU_OrderMinionMelee

Your team went even in the fight, what did you do wrong?

Neutral Fight

SRU_KrugMiniMini

SRU_KrugMini

SRU_Krug

Lost Fight in Mid Lane

SRU_Atakhan

Lost Fight in Top Lane

Your teammate helped you get a kill, what was the best thing to do in this situation?