Yeah, she knows that - that's probably why several writers (including Saladin Ahmed) were tried out in issue 31, she wanted to get the right successor in place.
The contributors in issue 37 were all of Kamala's current writers - Eve Ewing of the upcoming Marvel Team-up, Devin Grayson, who writes the Marvel Rising comic, Jim Zub, writer of Champions, and Ahmed, plus Wilson herself of course. The only regular Kamala writer not involved there was former ANAD Avengers and Champions writer Mark Waid.
And Ms Marvel skipped December because of a combination of that and Wilson falling ill. She's already proven she couldn't have done both. Maybe she could've if WW didn't double ship.