Her first solo album (with "Tell It To The Moon") was great, too...but, there wasn't any differentiation between her sound on that and The Motels.
In my "alternate history", Stevie & Lindsey quit Fleetwood Mac at the end of the
Tusk tour...Fleetwood Mac gets Bob Welch to return along with Todd Sharp on guitars and Martha Davis to join (bringing along fellow Motel-ian, Marty Jourard on sax & secondary keyboards). Now THAT would've been one helluva "Fleetwood Mac"

At that point, chronologically, all those Motels "hits" would've been Fleetwood Mac songs. "Only The Lonely", "Take The L", "Mission Of Mercy", "Where Do We Go From Here", "Suddenly Last Summer". How cool would THAT have been?
And, just think what Mick & John (with Bob Welch & Todd Sharp on guitars & Christine on keyboards) have done with "Envy"?!? YIKES!