Boring but Useful

This is very boring but maybe useful information. I have discovered that when I'm pulling Mary up to the head of her bed (that is, pulling on her, oh, what do they call it? Mattress protector from the hospital, so that she'll be high enough that when I put the head of the bed up, which is better for her digestive tract) it is better to have her bend both knees and push with both legs. In the hospital they always said to bend one leg, so I did that for years. It's hard enough pulling her up because I'm to the side, not directly behind, so any bit of help is greatly appreciated. Sometimes she can give me a big boost this way instead of a nominal one.