Sorry to hear your grandma is making it rough on you. I can see how this is hard on her, too, but that's not what you want to hear right now.
My brother and I cleaned out our mom's house a couple of years ago and it was hard. We knew which things were valuable and which things might mean something to someone else and we put those aside. It's hard to deal with other people when you're still hurting yourself. Most of the clean-out was done within days of our mom passing because we both had a week of bereavement time. We also met with an agent that my brother was using at the time and I didn't get such a good feeling from him. I ended up using the mom of a college friend and I made the right choice. Meet with at least two agents, three if you have time, and go with the one who makes you the most comfortable. I lived three hours away from my mom's house and it was very important to have an agent who wasn't afraid to email stuff back and forth. I also hope that you have a quick sale. I know how much it sucks to have all of this extra stuff going on. PM me if you ever want to talk about it.
Thanks for sharing this. I'm so sorry for your loss. I can't imagine how hard it would have been to go through everything that soon after she passed. I kind of hate being in her house this long after. I don't know how my brother has been able to live there without her.
We both really like the agent we met with last night. She seems really energetic (she was on vacation in Italy when I first e-mailed her, and just got back on Monday and had everything together and organized for our meeting yesterday). She also told us she likes to do electronic signatures with everything, which is good because the lawyer is also an executor of the will, along with my brother and I, so we'll just e-mail everything instead of having to all meet to sign things.