Oh gosh that is SO frustrating especially when your son already has to miss some school and you already have a drive as it is!!! I always have a drive too... my T (if I see her after work) is 35 minutes, and if I go from home its about a 60 minute drive. But, I have an hour drive to work every day so I am used to driving a lot. Its so frustrating, isn't it? Especially with the price of gas these days?
I think it would be worth it to speak up for yourself-- that would certainly be good, and probably make you feel better. But I wonder, what if what you wrote wasn't necessarily a letter of COMPLAINT, per se, but just a letter that was straight forward about how this was affecting you and your son, how these issues are a problem. You don't necessarily have to come across as "look what you're doing, this is pissing me off and i am so angry about it!!!" but as "this is what has been happening, and this is how it is affecting my family-- is there anything that can be done. i am thinking of changing providers/therapists/etc." That way it gets the issue out there, you get heard, and it comes across as straightforward, but not in a complainy way, just in a i need some assistance here kind of way.
Does that make sense?