TW: Since it is a distress call, my experience has been that they come in fairly fast. A couple of fairly short frantic calls should do it.
For the first doe I ever called in, I used a blade of grass held between my thumbs. After that, I started making calls from two pieces of wood held together with rubber bands. Cut out a shallow depression in each piece and place a rubber band between them and secure with rubber bands. Stretch the "reed" rubber band to tune.
Other reed materials can be used to get different pitches. I started using surveyors flagging, which if I remember correctly, I folded in half and blew across the fold.
I no longer live in Blacktail country, so I haven't used a call in a while. I'll take a look through my gear. If I find any, I'll take some photos.