Hi Unbar... you're doing okay. Deep breaths.
The nicest thing anyone can do for you is tell how why they didn't like your story. What you don't want is tons of feedback that it's average or good only to release and have a readersip silence and not know why. Every negative comment makes you more powerful. In so doing, a negative comment is not negative at all but a strengthening comment.
Having read book 1 of Tommy's journey, allow me to weigh in on her points
1) Use of modifiers. I didn't notice this. I'd say it's not that much of an issue. My advice re: editing hasn't changed. Your editor has a vested interest in saying nice things, even if she's unaware of this interest. You're not going to get objective edits from her. Also, everyone on TNBW is falsifying our reviews including me. The only honest reviewer I've ever seen here is Robert Stockington, and they ran him off the site in a day. CFB is close, but he tries too hard to be unreasonable.
2) Descriptions as dialogue tags. I used to be guilty of this - still don't see an issue. I'm saying I don't have a problem with your usage which is 100% of the reason you should ignore me.
wait... what?
Pretend 4 people read your story once it hits market. #1 & #2 like it. #3 is so-so. #4 doesn't like it. 9 times out of 10 it's #4 that leaves the review. You're not writing to please #1 and #2... you're writing to not displease #4. Therefore, even though descriptions as dialogue don't bother me, if they're considered bad by a quarter of the market, you might consider giving it a close look.
(A lot of people have attacked my opinion on this saying "It's my story. I'll write it how I like". This is commendable, but I want you to sell a million copies. 3 million. A billion million.)
3) Too many dialogue tags
I struggle with this on a daily basis. No matter which way I go, someone says not enough or too many. At this time, I lean towards too many deliberately, because no one really wants to read a story where they don't know who's talking. Whereas at least if too many, you know what's goig on even if you don't like the writing
4) Fancy tags
I'm guilty of this too. I'm always reminding myself to stick with the he said / she said.
5) Two spaces after period
I can't recall if I commented this when I read your book 1. Not an issue for me, but see the rule of 1-in-4 above
6) Book too long
Didn't notice the length in book 1. I did notice in book 2, but I was certain to highight the parts in 2 that made me feelthis way.
7) Flat characters
Oooh, this is a difficult one. It's their very flatness that makes them fascinating later in book 1 when they pop. Especially the mother-brother. I like them in all their initial flatness. You won't often hear me say that in my reviews. I can see your reviewer's point that they seem generic and no one wants to wait for them to fill out. That's the problem with today's society - no attention spans.
overall:
Glean what you can from this. Don't need to try to pick what's usable - your instinct will tell you that. Remember she's trying to help you and she belongs to group #4. This is rare and a blessing.
-K