My problem with her is the overall quality of her OF, not the quantity.
She started this endeavor with a major advantage that most others don't have right off the bat. She is an established personality online with a decent sized following and she already has camera and lighting equipment that set her on par with most others that have been doing this work for a long time.
Her posts are taken with a cell phone, no biggie. But that phone has serious problems. There are white vertical bands of light in some of her posts that indicate either a) she is taking the photos without proper light in the room or b) the camera on the phone is damaged. I saw her mention that she was looking into replacing her phone but so far she has not done so. This lady pulls in $5,000 a month easy on Twitch, and probably earned upwards of $60,000 from her first month on OF but she can't be bothered to spend a simple $500-$1,500 on a new camera or a new phone? She could use her streaming camera to take pictures, and even use the lighting setups from her streaming room to help her out, but she doesn't. She has the money to purchase a new camera and more lighting equipment if she wanted to and turn that spare room into a OF content room, but she doesn't.
The next is lighting in her photos. She basically has none, she uses the bare minimum. The valentines set and her first couple posts are the only ones where it looks like effort was put into the lighting of her photographs. Otherwise she is using the sun which is streaming in through a window. This isn't a bad thing in and of itself, but cameras need light to capture images correctly. At the very least use a small desk lamp angled towards the subject (her) and put it on the opposite side of the room from the window. This would eliminate the harsh contrast found in her posts and help the camera out which is already on its last legs.
The next is the complete lack of post-editing. She either does very little or nothing to make her pictures stand out and look great. I understand that she has a stream schedule and can't afford to sit down and edit photos for hours and hours but she can afford to hire a photo editor to do it for her. White balance adjustments, brightness and contrast adjustments, color adjustments, even a simple color grade can make her images look twice as good as they do currently even with the bad camera but she doesn't do that at all.
Regarding the quantity of her posts, that is entirely up to her. She sets the amount that she's willing to post and nobody has the right to demand more. We can hope for more, but at the end of the day it's entirely up to her whether to make posts or not. Her recent comments on streams about "needing to wake up at 3am for the Americans" doesn't hold any value. You aren't required to be on OF at a certain time to see/access a post. You can login at any time during a 24 hour period. If you want to see a post that has expired you can contact the maker directly and tip the required amount to access the post. "It takes all day to get photos taken because I don't like the way they look" sounds to me like self-esteem body issues. This can be solved by handing the photos off to an editor, allowing them to pick the best photos, touch them up, and send them back to her to post.
My advice would be:
1) decide whether she wants to continue making stuff for OF and if so start putting more effort into the quality of her posts
2) Invest in her equipment to improve the quality of the posts
3) Carve out 1 day a week to take photographs. Take 50-150 images in one or two outfits on this day.
4) Send those photos over to an editor so that they can be cleaned up and improved. Have the editor decide the best photos, whittle the entire amount down to 5-20 per outfit
5) Get the photos and post each set 3-4 days apart.
That is perfectly reasonable and very doable for her at the moment.