Inviting a family member to Japan – 招へい理由 and 招へい経緯？

I want to invite my mom to Japan. But I have no specific reason (like needing help with children etc) to invite her, she just wants to hang out with me.

So I put 「遊びに来てもらいたいです」 in 招へい理由。
There's also 招へい経緯, and I wrote「お母さんに会いたいから招待しました」.

I wanna know, will that do it for the visa application? Do I need to cite a more specific reason? She already booked the flight so I really want to make sure she doesn't get rejected.

Thanks for any help.