The SM can be seen as an effective theory at low energies and the higher energy physics would then manifest discreetly in processes as NLO corrections. In this work we present a specific flavor structure within the MSSM which allows mixing within second and third families of fermions through supersymmetric one-loop diagrams. We explore the consequences of this structure in flavor violation processes for the charged leptonic sector. As Fermilab recent results on muon's anomalous magnetic moment, improve its precision measurement, resulting in a discrepancy from SM close to five sigma. This result tightens at least one corner of the Standard Model, which otherwise was supplemented by allowing neutrino mixing. The above could represent a window where new physics can show its nature. We complete the analytical calculation at NLO to BR(τ→μγ) and BR(h^0→τμ ) without invoking the {\it Mass Insertion Approximation}. Additionally, we explore the possible FV processes, observation consequences and scenarios where they may also contribute to solving the g−2 muon discrepancy between theory and experiment.