The family is shocked this happened to begin with, but even more surprised a suspect isn't in custody.
"I never thought it'd take this long," Jennifer Hummel says.
Tuesday Jennifer Hummel plays in her backyard, one year ago she stood outside her sister's Deer Run apartment in shock.
"She was so quiet and kept to herself she didn't really have much to say. For somebody that did no harm to nobody else and for this to take place it makes you wonder why and that's the worst part why, why," Hummel says.
Zachary, Stephanie's two-year-old son was in the apartment at the time of the murder.
"He's doing great-surprisingly great," Hummel says.
Their biggest concern is the police don't have a suspect.
"Do you think her killer should have been found? Oh, yeah, oh, yeah, found, sentenced and over and done with let us go on. I don't feel like they're doing their jobs," Hummel says.
Police say it's not that easy. They've collected hundreds of pieces of evidence, gone through numerous investigators and interviewed more than 100 people.
"I think we all would like to see more I think we would like to be able to solve the case tomorrow or yesterday and that's something we're trying to do," Lt. Kurt Boshart says.
Even though it's been a year, Lt. Boshart says they still have a good chance of finding the killer.
"We feel confident this case will be solved and it's just going to be a matter of getting everything in order," Lt. Boshart says.
For Sipe's family, the sooner the better.
"It makes you wonder whose toes am I going to step on it makes you always watch your back," Hummel says.
Investigators believe a shirt and hat found in Sipe's apartment are the keys to the case. Once thy find the owner, they say they'll be much closer to an arrest.