Why did he say "Mah Lach"?
Malbim: [In addition to asking what her case is], this includes why did you come, and not your husband, relatives or sons? Women do not normally come for judgment!
What is the meaning of "Aval"?
Rashi citing Targum Yonasan: In truth.
Malbim: (David asked why her husband, relatives or sons did not come.) I am a widow, my son is cast off from his place, and I came to scream about my relatives!
Why did she need to say "I am a widow" and "my husband died"?
Radak: I am a widow for a long time - if they will kill my remaining son, I will be considered as if my husband died today!
Malbim: This teaches that she had two husbands, and both died. This shows that she has a bad Mazal 1 , and no hope of marrying again and having more children, for she is a Katlanis.
Why does he say that her husbands die due to her Mazal? Also according to the opinion (Yevamos 64b) that 'Katlanis' is a venereal disease, she may not marry again! (PF)