Mara fucks Cris to calm his fever and he can fuck her very well.

Cris is a little feverish, but Mara knows the best way for fever and other ailments, so she decides to act and starts fucking Cris so that he recovers as soon as possible and can reciprocate the attention she is having with him. Cris lets himself be taken care of by Mara and waits until he is recovered and strong to make Mara fuck hard and thank her for how kind and attentive she has been with him.