My cousin seems to have the idea that texting 24/7 is ok what should I do?

She lives in North America and I live in the UK she will easily text throughout the day if she could I’m trying to make my responses slower and slower. If I don’t text her a lot she always thinks something is wrong which annoys me as I just want her to stop texting all throughout the week and everyday. I sometimes feel anxious at times having to respond. Yesterday I gave her a quick text before I went out a walk and she tried FaceTiming me but if I answered the call she would start calling too much as well. She’s in her mid 40s doesn’t she have stuff to do and how does she manage to text while at work

My cousin seems to have the idea that texting 24/7 is ok what should I do?
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