I don't know how she'll perceive this, but as someone who stutters, whenever I have to engage in a long conversation, I use a small notepad and write out my sentences and let the other person read it. It helps in moments where I cannot get a sentence out. Be careful about suggesting it though. A lot of people get upset when you make suggestions to them because they think you are trying to take over their life or somehow rejecting their true character lol.