Seven Mary Three - Things I Stole I NEED HELP

I want to play this song for my supervisor from my old job and she asked me to learn it long ago and I could never get it down. She's been pretty sick lately and I want to brighten her mood by playing it.

I'm having a very difficult time with the strum pattern/picking.
The only tab i can find only displays the chords and I can't exactly figure it out by ear. If somebody knows how it's done or wouldn't mind checking it out to help me, I'd appreciate it so very much.