Ahead of Anne v Laura I've spent (wasted) a bit of time on the ITF website looking at both girls records in all GB matches.
Anne has an overall 68-10 (87%) record, including wins in her last 7 all GB matches.
Laura has an overall 11-2 (85%) record, and she has also won her last 7 all GB matches.
Conclusions? Both has been equally good in all GB matches so not much to go on.
Bet365 make Anne slight favourite (8/11 with Laura Evens) and I would probably make Anne more of a favourite than that given her recent results and Laura's injury last week.