Flashing speed and cheering her up, really praising her can be a help.
For my daughter I found using red dots worked the best. She actually made up a story about it ( all by herself) that these were ladybird dots, and lady bird was talking to her
Now she is very careful to not miss how many ladybird dots there will be...
But all I can say -- try different things, or even try to have a break for a little while and then start again.It also can help
Good luck and let us know how it is going!