There are limits on how many bones and materials one model can have in SFM, so they have to be broken down into multiple models. So you just have to deal with it.
Try updating 7z or whatever you use.
After you have zeroed the clothes, select all the cloth bones that aren't locked and use the Default slider.
Change the name of MouthM_2.vmt to MouthM2.vmt
I didn't modify the body, it's straight from Chrissy-Tee's Deviantart. Looking at what they talk in there that they can't get the morph values, it's probably not exactly right, but in my eyes not noticeably different. But for example Ivy in there clearly has smaller breasts than in game. I don't myself know anything about extracting from games.
I don't think it does, since other people are asking for it on Gmod too. I have never used Gmod and don't know much about it, other than apparently models can have less bones than in SFM. Was it 256 in SFM and 128 in Gmod.
https://steamcommunity.com/sharedfiles/filedetails/?id=245723825 You only need to google "blender to sfm" and you find tons of guides. This guide by Pte Jack is the most comprehensive I know. It's quite big, but you certainly don't need to do everything. For simple porting you can skip like 80% of it. One essential thing you need is Blender Source Tools, both that and QC's are talked in there.
Yes, everything I have here can be ported to Gmod or other programs. No need to ask me.
1. It's technically superior, and since it's also aesthetically pleasing to me, I never saw any reason to continue with this. 2. Over time, I started to come up with OC (original character) stuff, and that has nullified all my interest in everything else. 3. I do have a tumblr with the same name I have in here if you want to know what I'm doing. 4. In conclusion, I just do my OC stuff and nothing else anymore.
And I won't. Time goes on, my interest has changed. Besides those, there's already a far superior quality model of Raven made by Skuddbutt and ported to SFM by JawsSFM in here. Why would anyone use this crappy model over that? I wouldn't.