Speak to Danielle near the breeding center (Wavemeet Bay) @ -930 23 988

Head West and find Danielle's Niece and Nephew @ -1051 22 1003

You will need to battle both Kristen and Christian,

Kristen:

• Lv 45 Gorebyss
• Lv 49 Espeon
• Lv 51 Delcatty

Christian:

• Lv 46 Huntail
• Lv 50 Umbreon
• Lv 53 Mightyena

Once you defeat them you will complete the quest and receive the following rewards: