I find this thread so frustrating!
Talk time, less than five minutes a day sharing with someone, is what it the OP was about.
For that amount of time, and that task only, then having a lower-ability partner on sonme occasions should be absolutely fine.
An example of talk time:
Teacher: "Do you remember what a sentence is?"
Children in pairs for one minute: Urm, "capital, full stop, verb..." between the two of them, and then all turn back to the teacher.
This means that OP's DD gets to say what she knows about sentences out loud, or hear it said by her partner. The alternative would be her knowing it, waving her hand in the air, and 29 times out of 30 another child being chosen to say it and she just has to listen.
If we are talking about streaming, doing the same work, helping with work, etc, etc, then that is a whole different thing.
FWIW, my son went from the very bottom reading group (reception) to know the very top (Year 4). He did the same in Mathematics, and that is a subject they formally stream in. He was a very late bloomer, and I am pleased he was with a school and peers that allowed him to blossom!