Female cat gone nuts

My daughter's cat, now 10 months old, has become almost unbearable.
When we first got Yoshi at 6 weeks, she was very loving. Even after
her spaying a few weeks later, her personality was great. Although
she's always been partial to my daughter, she used to jump up in my
lap to be petted. We know the history of this cat since birth, as
well as her parents (and grandparents), and all were well treated.

The problems started not long after our trip to Florida during the
summer. We left her at my mother's house. She also has a female cat,
about 3 years old. Yoshi came in and took charge, basically ejecting
my mother's cat from the house for the entire week we were gone.
During that time, Yoshi would follow my mother around and jump up into
her lap wanting attention. My mother has always spoiled her cats, and
she treated Yoshi no differently.

After we got her home, my daughter stayed with a friend of hers for
about a month until school started back. She took Yoshi with her.
They had a small dog, and Yoshi seemed to get along well with it. But
when my daughter moved back home, Yoshi's personality had changed
dramatically. When I went to put her in the carrier to come home, she
fought me and scratched my arm up pretty good. Now, when my daughter
is home, Yoshi basically ignores me. When my daughter is not here,
Yoshi will come into the living room meowing at me, but runs when I
try to touch her. I tried ignoring her when she comes into the room
until she starts rubbing up against my leg, but she still bolts when I
reach down to pet her. Now it's to the point where she stays in my
daughter's room most of the time, only coming out to growl and hiss at
me. Any attempt by me to touch her results in her swatting and
clawing at me, sometimes with some serious scratches and puncture
wounds on my hands and arms. Thankfully, the only things she hasn't
been doing are biting and using the bathroom outside of her litter
box. When my daughter is holding Yoshi and she comes near me, Yoshi
starts growling and clinging to my daughter as though I'm going to do
her harm. My daughter hasn't been completely spared from Yoshi's
wrath, but she doesn't get near the reaction from Yoshi that I do.

I've had cats for most of my life, and I've never had one act this
way. I don't know of anyone who has abused her, and don't know why
she seems to hate me so much. The only thing I can think of which may
have set her off is when we had to take her to the vet soon after our
trip because her spaying incision didn't appear to be healing
properly. She fought me ferociously as I took her out of the carrier,
and the vet had to call in extra help to restrain her. Once his
assistants took over, I stepped back and let them do their job. Once
in a while, my daughter can lay Yoshi down next to me and she will
stay as long as I scratch between her ears, but she does so very
reluctantly, with ears back and her growling most of the time. She
then jumps up and runs within seconds after I stop scratching her. If
I go into my daughter's room, Yoshi will hiss and growl at me while
crouching down next to her litter box.

Any ideas how I can reverse this odd behavior from Yoshi?