Unless there's no room for her legs under the bar, she needs to get stronger and adjust to her growth. It is unreasonable to change the settings for one kid unless the bar is truly too low for them and they can't hang. It takes a lot of time during workout to adjust the settings and it is NOT common for coaches to change them for one gymnast so she can do everything, which would mean resetting the bars every time it was her turn. Unless your daughter wants to warm up by herself at every meet she is going to have to go on the same setting as her team anyway. Some gyms may have the opportunity to have two bar sets which they can leave on different settings, but if that isn't possible and the coach designates the FIG setting for instance, then the whole team commonly goes on that.
I am not against changing the bar setting by height, by the way, and will try to accommodate as necessary (operative being necessary) but just because the OP's daughter went through a growth spurt and bars is suddenly hard for her does not automatically equal the coach being lazy. Nor is it the best mindset for her daughter unless she truly can't do a glide on the low bar.