I look at 9 as still being rather young, and just the start of the senior years. But with that said, they don't all age at the same rate. I would have a full workup done at the vets. And consider she might be showing some early signs of dementia.
The lack of wanting hugs, and her falling over a couple of times, could also be a sign of something bigger going on.
She could be resisting hugs, because it causes her to be in pain, or uncomfortable.
Keep in mind these are only guesses, and likely none of the above is correct.
Wouldn't it be wonderful if they could just talk to us.
Not all those who wander are lost.
Life is just a leap of faith.
Spread your arms and hold your breath and always trust your cape.
Two things define you. Your patience when you have nothing, and your attitude when you have everything.