Apparently Christine did a Q&A with Warner/Reprise in 1995 before the release of the
Time album.
Here's an excerpt w/the link below.
JBatman95 : Do you still interact with other members of Fleetwood Mac?
Christine: Very much so, I have not seen Stevie in a while. I have been recording with John and Mick for the last couple years, and just ran into Lindsey at a club a couple weeks ago and had a good chat.
Gre1440: Give us your perspective on this most recent incarnation of Fleetwood Mac.
Christine: I find it a bizarre combination of people, but Mick chose Dave Mason... I don't think he is a bad guitar player, but I just don't know how he fits in with Fleetwood Mac... Great guitar player he is, he would not have been my first choice.
MastrPeace: Who would have been your first choice, as opposed to Dave Mason?
Christine: Lindsey Buckingham, I think he was the most superlative guitar player this band will ever have. A true shining light. After Lindsey, everybody else seems a little palid. I'm not talking talent, just chemistry for Fleetwood Mac.
Otherwise, there is no mention of Bekka Bramlett.
http://www.fleetwoodmac-uk.com/articles/FMart106.htm