Mesangiocapillary glomerulonephritis (MCGN) is an uncommon kidney disease. There are many different forms of MCGN that have been described. Chinese medical osmotherapy is of no benefit in any kidney disease that I am aware. I cannot comment on whether you could pass this along to children. There are some forms of MCGN that can be inherited and some others that are not. There are complement deficiency syndromes that can be passed in families. I suggest you discuss your concerns with your partner’s nephrologist.