i have this exact issue and weve talked about it and she understands and when i sometimes have to bring it up she is capable of stopping herself from half an hour long rants but it has to really be me exploding and cryingsayin i cant do this please dont talk i beg you bc i dont just bring it up usually for that to happen sometimes she will say oh here im ranting again sorry and doesnt talk anymore and then several days later she stoppes self controlling again   ive found out that talking to her without emotions with flat intonation helps me not feel overwhelmed and ive also learned how to talk to her without listening the ohs and wows and oh yea yeas they keep me as distanced from her as i can be without hurting her luckily i dont have to use those every moment she is a pretty self-sufficient talker