My Golden Retriever is no longer able to enter the car. I want her in the back seat. I have tried all sorts of ramps. All returned. Two issues. Door does not open far enough to place the ramp and there is nothing to grab onto on the rail. I have tried free standing ramps for her to just walk in. This does not work, because the seat cushion is too high. Please let me know what I can use to allow the dog to enter the car for the back seat. I am out of ideas and my dog and her human are struggling. Thank you.