Deceased Husband's Collection

Now I've mentioned before that I work in a financial institution which makes it easy to get penny bags for sorting. Through sorting I've gotten into hunting for silver halves and even the tellers have brought me a few silver coins here and there. Today a woman came to the branch with a large purse sized bag full of her deceased husband's coin collection and asked one of our service reps to refer her someone to help her with value so she's not taken advantage of when she sells. They naturally referred her to me because of my modest collection.
I start looking through and finding everything from indian heads as far back as 1859, merc dimes, quarters, dollars, you name it. Anyway, here's the thing. She has a few pages inventorying everything and I offered to do some research and I'd make her a fair offer. I was sure to set her expectation that she would not be getting full value for anything but I would not take advantage of her situation. Granted her husband died 14 years ago and these have been sitting around for that long.
Help!
What's a good resource for values? I have a copy of The Red Book but the values in there seem high. I've used coinflation.com for coins that I could but many are older than they calculate values. Once I have a value what do you feel is a fair offer in this situation? My goal is to be fair yet get a good deal. Win-win...
This would be the first time I'd pay more than face value for a coin so I'm a little nervous.
I start looking through and finding everything from indian heads as far back as 1859, merc dimes, quarters, dollars, you name it. Anyway, here's the thing. She has a few pages inventorying everything and I offered to do some research and I'd make her a fair offer. I was sure to set her expectation that she would not be getting full value for anything but I would not take advantage of her situation. Granted her husband died 14 years ago and these have been sitting around for that long.
Help!
What's a good resource for values? I have a copy of The Red Book but the values in there seem high. I've used coinflation.com for coins that I could but many are older than they calculate values. Once I have a value what do you feel is a fair offer in this situation? My goal is to be fair yet get a good deal. Win-win...
This would be the first time I'd pay more than face value for a coin so I'm a little nervous.
