Holly Marie Combs is waiting for Shannen Doherty to make good on a promise, just one week after the actors death at age 53 .

Combs, who costarred on Charmed with her late friend, wrote a sweet message on Instagram Sunday about Dohertys commitment to her.

Its been one week and it feels like forever, the actor wrote alongside a video montage of photos of Doherty.

I spent all day looking for one particular picture and found just about every picture but that one, Combs added. Shannen promised to haunt me but I thought shed be occupied with a few others at first. Alas Im sure it will show up when and where I least expect it. My rock. 10:18.