Talk to Ava is an objective in the Story Mission, Beneath the Meridian in Borderlands 3
Go to Sanctuary
Give Vault Key fragment to Tannis
Go to Sanctuary bridge
Go to Neon Arterial
Eliminate Maliwan squad
Talk to Zer0
Meet Maya
Drive Project DD
Drive to Apollyon Station
Destroy enemy vehicles
Drive Maya to blast door
Enter Apollyon Station
Find tunnel to Vault
Find Vault
Place Vault Key
Defeat the Rampager
Loot Vault
Break Eridium Deposit
Access lodestar
Return to Maya
Talk to Ava
Return to Sanctuary
Talk to Lilith
Talk to Ava (Optional Objective)