Do you pay her cell phone bill or for the internet? If so you can stop paying her cell phone bill. But if you need the internet that won't help. You can't force her to stop talking to him, she has to wont to do that on her own. But you have an opportunity to shed light on the situation. You have an out here. You are afraid to use it. Make her deal with the consquences.

But you cant force her to stop talking to him. And telling her to stop talking to him is not setting a boundary for yourself. It's you trying to control. You are detaching, you cant control another person.

M:37 W:37
T:11 M:10
S17, S13, S10, S4
BD:06/28/17
OM confirmed 07/20/17
Recon the M 10/29/17
Working hard:2gether

Onward and forward

This process is not a sprint it's a marathon! Patience, Patience, Patience.