You click on my profile, Send Message and you either put Attach Itens or Start Trade. Since I sent you stuff on FR you can just attach the wolf, but if you do the trade fully here you click Start Trade.
It looks like the consensus ratio is 10 gems : 1 MS. Based on checking flea market prices, 6000-ID wild wolves start at about 1,000 MS at the moment. I'd say 1000 MS equivalent for Verna since she has nice colors; less (probably around 600-750) for Joan. I'll also take mixed payment in treasure and/or familiars I don't have.
@TheEnforcer Hey! I'm interested in verna - I have some of the false bears you're missing (give me a second to figure out the duplicates) and I can do the rest in gems.