PIP reassessment is mandatory reconsideration worth it?

Hello, apologies for the length of this.

I'm posting for a friend who is too overwhelmed to even think about mandatory reconsideration after a very difficult telephone reassessment. She has issues with her feet, spina bifada and weakness in her hands/wrists/forearms since childhood. Having had a lot of operations and medical input over the years she has tried to manage pain etc herself rather than going to the GP when she knows they won't be able to help. I have seen first hand the challenges she faces. But the assessor took a different view and awarded her no points at all. This was over turned by the decision maker who has awarded her standard DL and standard mobility. This is what she was awarded in 2017 but she was assessed as enhanced DL (I think in the assessment before this one). She can't find the award letter. She is currently under a consultant about some of the issues with her feet which may result in fusion or amputation. Having read the assessors report it is clear as someone who knows her that the stress and anxiety made it difficult for her to communicate her reality. There are a number of points that I have a feeling the assessor misunderstood. She has stated that she struggles taking nutrition (having used your guides and training for my own PIP I think she really was thinking that meant preparing a meal but hey ho) and the assessor has stated that she uses smaller cutlery because she has small hands - when what she was trying to convey is that the weakness and pain makes it difficult to hold standard size. The assessor also stated that she showered three times a week to save water - when actually it is because the pain of standing on her foot is too much. Also she used to go sailing and the assessor said this is because her dad sold the boat. It is actually because she no longer can be that active. What has really gone against her is that as she can drive (an adapted car!), dust and wipe surfaces and use grab rails in the bathroom she can manage OK and there is no functional restriction. They have decided that because she can convey food to her mouth she has adequate grip power to manage pain medication and because she completed the handwritten form. AR1. They have assessed that as she only uses over the counter pain killers massage and exercise that her pain isn't that bad, also that she doesn't have any hip/knee/back deformity which would impact on her movement (which I'm not sure is accurate) and hasn't had input from the falls team she must be OK. Although there is some reporting of additional time taken in activities there doesn't seem to be any recognition of the pain it causes her when she is using her foot either standing or walking, which she has described to me as stabbing and searing and that she feels nauseous and like she might pass out. I think she was too distraught by the process to say this but also they'd disbelieve it because of her reluctance to go back to her GP for pain medication. In addition to all this she found it difficult to understand the assessor who had an accent.

I think there are several areas she could challenge in terms of misunderstanding, but that if she does go for mandatory reconsideration she should aim to get the previous points reinstated. It does feel risky though and might be worth waiting for a reassessment which will be 2027 (so in reality this time next year). So I suppose I'm trying to get a less biased view as to whether it is even worth thinking about on the information above. Are there things that could be gently clarified (challenged!) do you think? Especially given the lack of evidence. I do know that there are threads about driving and also about pain medication but equally it is more difficult to go back instead of being clear on the form. Final question - do they accept photos as evidence - she showed me a photo of her foot at the end of a typical day and you can clearly see it has swollen significantly and to me shows how much pain she is actually in. Any thoughts would be really helpful. Thanks.