Posted by Mr_PinchyYay that or just a quick message that she's grateful? Hasn't she sent anything to say thank you yet?
Call him now that youre okay. Disguise it as a thank you call. He will most likely be very pleased if not outright happy you called.
The disappearing after nurture is him not wanting to give an impression he expects a date out of you because "i nursed her back to health, only me, myself and I". Or coming too strong. But he'd like one for sure.