Dee ihe na-aga n'ihu maka paragraf a - Na 2012 Summer Olympics na London, Blume sooro ndị otu Denmark n'asọmpi ise. N'ọsọ mita 50 n'ụdị nnwere onwe
ọ gara n'ihu karịa okpomọkụ ahụ ebe ọ gwụchara nke asatọ n'ọsọ ya na nke 26 kachasị ọsọ n'ozuzu. Na 100 mita freestyle, a chụpụrụ ya ọzọ na agba nke mbụ mgbe ọ kwụsịrị nke isii na okpomọkụ ya na nke iri na itoolu kachasị ọsọ. Ọ meriri okpomọkụ ya nke 200 mita freestyle mana agafeghị agba nke ọzọ mgbe ọ gwụchara 24th kachasị ọsọ n'ozuzu. Na 4 × 100 mita freestyle relay Blume na-egwu mmiri na Danish quartet tinyere Mie Nielsen, Lotte Friis na Jeanette Ottesen; ha ruru eru maka njedebe, nke ha kwụsịrị nke isii, na-edozi ihe ndekọ mba Danish ọhụrụ nke 3:37.45. Na 4 × 100 mita medley relay Blume, Nielsen, Ottesen na Rikke Pedersen ruru na njedebe wee kwụsị nke asaa. Ka oge na-aga na 2012, o meriri nrite ọla edo na World Short Course Championship na 4 × 100 mita medley relay. O nwetakwara ọla nchara na 4 × 50 mita freestyle relay.