My DD did slightly better, 100, 97 and 96 iirc.
She does find secondary a struggle but isn't currently in bottom sets at a good comp.
Being taught at her level has helped her grow in confidence (for example she no longer has the top table kids calling out the answer in maths while she is still understanding the question).
As she has matured she is more willing to accept help from me.
Reading and writing hits more subjects than maths, so (though it pains me to say it) time spent on those will give you more bang for your bucks.
If they can be persuaded, try to keep basic skills going over the summer holidays so at least they hit the ground running. e.g. Holiday diary, library reading challenge, and some maths towards the end of August.
Remember that scaled scores go down to 80, so 95 is only a bit below expected standard.
And don't listen to the people who say leave them to it when they get to secondary. If she will accept help then you can add quite a lot of value helping 1-1 at home.