I think,here,that, if you insist on having the question begin with "how",the possible results will be minimal.A question that begins with "how" seeks to know the manner in which a particular action was performed and such questions are usually asked in the simple present and simple past tenses(or aspects)..eg...how DOES(simple present)she sing?...she sings gracefully...eg How DID(simple past)she sing?...she sang gracefully...it is difficult,for example,to have an answer like this..."she's sung gracefully" yet expect the question to begin with how..."how did she sing?"(wrong).
To conclude,an answer in the present perfect or past perfect tense cannot have the question begin with "how"..."what" would be an empirical alternative.
"she's broken her leg"...how?(wrong)
"she's broken her leg"..."what"(correct)..eg "what has she broken"?..."Has she broken anything?"(correct)