SR5 p. 77 Quick Healer
A character with the Quick Healer quality receives a +2 dice pool modifier to all Healing Tests made on/for/by her, including magical healing.
SR5 p. 450 Medikit
Wireless: ...can operate itself with a dice pool of Medkit Rating x 2 and a limit equal to its Rating.
on/for/by means you can replace it with just 'on' or just 'for' or just 'by', yes?
On her could for example mean that someone else get a positive dice pool modifier to use first aid on her?
For her could for example mean when she use a medkit, turn it wireless on and use it on someone else. The medkit would get a positive dice pool modifier while taking the first aid test for her?
By her could for example mean that she use First Aid on her teammate. She would get a positive dice pool modifier on the first aid test made by her?