it looks like shes been banging them around. how wide is her cage? is she crash landing when she flies?
they dont look like they are breaking because of stress bars, so that is a good sign, means trauma to the feathers is more likely the cause compared to a nutritional issue.
if the other wing and the tail are really bad, it may take a long time to grow them all out because she will likely damage them as they grow in. its a tricky call. and with one whole wing damaged, it's very hard for her to fly.
ive had this problem with my male cockatiel and he had to be imped to prevent more follicle damage from damaging his feathers all the time. he was clipped and his feathers always got damaged when they grew back in, so the clipped feathers had to be imped to protect the new feathers growing in.
imping isnt an option for a bird as small as a parrotlet unfortunately, so you will have to be patient for her. she could also be acting out a bit because she may feel frustrated and uncomfortable breaking so many feathers. but i think hormones are more likely the cause. but could be a combination.
to help the feathers grow in better, you will want her to not flap around so much when she starts molting them out. because those feathers are going to be vulnerable having no support of other feathers. having a poor wing and poor tail is making her flight tricky i'd guess and its gonna be hard for her to grow in feathers in the end.
but she is young, so good news for you is that most young parrots are clumsy and break their feathers but grow in their adult feathers just fine, no matter the damage. but you could also potentially have the same problem i did with my male cockatiel. i have my fingers crossed they all grow back easily and safely
as to the hormones, i feel you. my female lovebird is really nasty at times when she is hormonal (which for her is nearly all the time). cage territorial behaviour is not fun for the owner, but try to respect her space. respecting her space and wishes, you build a good foundation of trust and you may find her aggression may tone down a bit.
