What is this mini tree

[bob the builder]

I have been asked to prune a miniature tree i have know idea what it is . sorry its a bit up in the air but i will try to explain. Its about 3 foot high and hangs like a willow but it has dark green broad leaves and the coverage is complete. The problem is if i was to prune it off the grass its going to look empty.sorry for the worst description in the world but can you help thank you

[Mysterious Traveler]

Say you pruned it, and don't.

[bob the builder]

cheers for that but what type of tree is it and she wants it pruning tomorrow i think she will notice if i dont as it is only 3 foot high