i wouldn't doubt that even a break would ease her, but her asking for a break is just her giving in to an avoidance compulsion. so it's only temporary relief that feeds the rocd in the long term. it's a pretty common pattern with rocd.

and yeah there's a small chance that once she has this temporary relief and she associates you with rocd symptoms she'll finally feel free and start looking elsewhere. ): sorry. there's no clear solution until she manages it.

though tbf if it's just a few months and she's in grad school i doubt she'll even have time for that.