Here's my felted Sophie. She's a tad uneven, but I like her.
I ended up putting the bag inside a zippered pillow case, adding some towels and running the hot wash cycle four times. I found out that the red bleeds. The French market bag I'm knitting is also Cascade 220 and my needles are turning green. Maybe this is a problem with all of their darker colors. Despite the slight pink hue some of my kitchen towels are now sporting, the whole process was harmless. The excess fiber was safely trapped in the pillow case and the washing machine can go on to serve us for many years to come.