How is the Tanabe family good for Mikage?

The Tanabe family is good for Mikage because they provide support for her. Yuichi has a strong and understanding connection with Mikage, and it is evident that they have a lot in common. Eriko is a kind woman who wants to help Mikage in any way possible, and to make her feel comfortable. These elements that they provide allow Mikage to become comfortable and eventually show her true emotions to eventually grow as a character.