Now Simon’s mother-in-law lay ill with a fever, and immediately they told him about her. 31 And he came and took her by the hand and lifted her up, and the fever left her, and she began to serve them.
Jesus cast out the demon by using words of authority. In contrast, Mark makes frequent reference to this in 1:41,5:41,6:5, etc, Jesus healing happens with his physical touch. On getting better she began to serve. This family, peters wife, and mother in law and peter himself were all radically changed by Jesus,
Searching around the Nicene fathers (Libronix/Logos computer package) I found the following tradition concerning Peters wife.
They say, accordingly, that the blessed Peter, on seeing his wife led to death, rejoiced on account of her call and conveyance home, and called very encouragingly and comfortingly, addressing her by name, “Remember thou the Lord.” 
Service to God, in response to what he has done in peoples lives, involves cost.
Lord you touched Peter’s mother in law and you have touched my life. May I like this lady of old respond in service to you. Lord if you call me to serve like Peter’s wife. Thy will be done.
Roberts, A., Donaldson, J., & Coxe, A. C. 1997. The Ante-Nicene Fathers Vol. II : Translations of the writings of the Fathers down to A.D. 325. Fathers of the second century: Hermas, Tatian, Athenagoras, Theophilus, and Clement of Alexandria (Entire) (541). Logos Research Systems: Oak Harbor