your daughter may be doing hours of practice everyday but is she practicing the right way? She could be practicing for the sake of doing it, just fast practice/ or not making the effort to correct anything which the teacher has told her to...

i kind of understand kids in that situation because I wasn't taught how to practice for 14 years...

I have a good opinion of teachers trained under the Russian School of Music. My teacher who re-built my foundation& taught me for more then 5 years studied under Russian teacher(and she still teaches me in canada). My private teacher here in Singapore is a Russian. Both are excellent teachers
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Mastering:Chopin Etudes op.10 nos.8&12 and op.25 no.1, Chopin Scherzo no.4 in E major op.54, Mozart Sonata in B flat major K.333& Khachaturian Toccata