Help with Wallington Girls

[Patty]

I posted about a week ago but I think I asked the wrong question. My dd passed the Wallington School in Sutton test at 352 and they offered to girls who got 331 and above who live in the catchment area. If she had reached 375 or above then she would have been offered a place (the top 50 girls). I want to appeal because there are no schools in my area that are as strong in maths. Is it worth appealing? She is 1.1 km outside the catchment area, but I dont know how an appeal can even stand a chance with her marks