You know your child, and you know all the positives and wonderful things about her (and I am sure there will be many- the times you laugh and have fun together) - so don't feel sad that you have to paint a negative picture to get help - we found we had to do this too, and my friends with children in a similar situation always said "tell the professionals (gp/paediatrician/DLA form) about your worst days" - not about the days when it is actually going okay. Keeping a diary/notes will help you remember, and perhaps may also help pinpoint any particular triggers, or changes of routine. Everything (statement, assessment etc) is so dependent on money/resources, and if you don't tell them how bad the bad days are, then they will just assume you are coping, and that your daughter is coping, and doesn't need help (especially if she can "hold it together" at school, and you get the meltdowns out of school)
I can really sympathize with you about the walk from infants to juniors - we have to do this with my youngest (the one with ASD) to get his brother from juniors. Juniors finish 10 minutes later, and it is a 10 minute walk from infants to juniors if you walk briskly, but usually my youngest is last out of his class (and they are usually late finishing) and then just refuses to walk, so we can be upto 20 minutes late picking up my older son, with me on occasion literally having to carry or pull my son along. Fortunately our junior department are reasonably understanding, and there are other kids who have parents arriving later just because they can't be bothered to be on time!
The youngest couldn't ride a scooter or a bike (he can't balance) but when we got the DLA allowance this Autumn, we used it to buy a microscooter (the ones with two wheels at the front and one at the bacK) as you don't have to balance those. I also got the pull along cord for it; and so now I pull him from the infants to the juniors. Most of the time it works, though he is not at all road safe, and still at risk of running off. But might that work for you? maybe you could borrow one from someone and give it a try? I also now give him a snack (a biscuit or something similar) immediately when he comes out from school, before we start going to the juniors, so hopefully the sugar gives him a bit of energy, and picks him up a bit, and puts him in a better mood, and aids a smooth journey - might be worth a try.
I never got round to doing videos, but if you can do that, then I think it is all helpful to support your case. And IEPs from school too (if you have them) like Polter says above. And if you don't have IEP, maybe ask school whether she needs one - it sounds like she should have one, especially with delayed speech and hearing issues? And keep a note of how often she "zones out" - as that can be when everything is too overwhelming, or when there are sensory issues. Do the school use a visual timetable with her? We have one at home and school, and try and warn DS of any change to routine - if he knows about it, he can cope with it much better. We also remind school to do this - even if it is something as simple as "no PE today" when he is expecting it - as this can upset him, whereas if they remember to tell him about any changes, then it is usually okay.
We had a great teacher in year R (very perceptive to DS's issues) but his year 1 teacher is NQT, and whilst he is a lovely chap, he has no idea what to do with DS or how to motivate him to be included in the class, so this year is proving to be much more difficult.
I think it will be a fact of changing class every year that there will be good and not so good teachers.... so maybe you need to try and get your SENCO at the school on your side, and keep talking to him/her about what is working for your child, and what the school can do to help.
By the way, if you are going to apply for DLA, then phone up for a form (don't do it online) - as you have phoned, and you are successful in getting it, they will backdate it to the date they posted the forms to you. If you do it online, it is only from the date you submit the forms, and it will take you a lot of energy and time to fill them in. I found doing them on paper (so you can see the whole form) was much easier than doing them online. And having the diary /notes really helps, as you have to give examples of behaviour and how often it happens. And remember to keep a copy too, so that you know what you have written. From what you've said about your daughter, I think she'd qualify, at least for the lower level.
There's some helpful info on filling them in on the Celebra website here: www.cerebra.org.uk/english/getinformation/publications/pages/dlaguide.aspx
Well worth reading their guide.
Our son went through a phase of biting, currently he's spitting, and I sometimes wonder if he uses it both to express his frustration, and also to keep people away from him (he gets overwhelmed with too many people, and spitting works really well to make other kids keep their distance). I haven't got any answer for it, other than to try and work out what the trigger is - usually when he is cross, frustrated or angry.... and then try and avoid those situations if possible. (sometimes caused by him and his brother arguing, so often out of my control)
Best wishes for the GP's appointment - remember you know your child better than they do, so even if they are unsupportive, you can still insist that you want them referred. And hopefully you'll have a supportive GP, who will be helpful!