Answer:
Because she feels that they exploit her and her stepmother, as well as being abusive to women in general.
Step-by-step explanation:
Gretel is a very strong character, but who lives under the dominance of patriarchy and under the exploitation of men who see her and other women as worthless beings and who do not deserve the merits of their own work. For this reason, she does not like men, especially those in her family who show themselves to be very profiteers and make sure that she does not have the advantages of what she herself built, in addition to being petty and intolerant.