Yes. They do learn. You are teaching her right now, every time you respond to her and help her, she is learning.

Remember they go through phases, very frequent and big changes from the perspective of a little baby, where they may need your help even more. Teething, illness, developmental leaps, separation anxiety, etc, etc, for many children this leaves them needing more reassurance and help with soothing (and means they don't sleep as well).

When times are harder on you, you might find it helps to .... get help Call in reinforcements, let things go, do whatever makes things a bit easier for you right now. The bad times are not the best time to try and make changes, generally speaking.

Here's what I do: Co-sleep, all the time (I refuse to make my life harder by getting out of bed). My DH steps up on very bad nights, he takes over for an hour or 2 in the morning before he has to leave for work, and I get sleep ins on the weekend. My house is a mess. We often have baked beans or scrambled eggs for dinner.

Hang in there. In a year or two you'll be able to look back and feel really good about all this good parenting work that you're doing right now. And you'll be able to see things clearly for the benefit of perspective & being rested.