Re: What should I do? sell/trade or keep them?
I would keep them. From 15 months till PL she will grow taller and as she grows her rise will too. She will end up with plumbers butt in the meds and you will be back in PTs!!! bTW, I have a 15 mo and he too is best in mediums right now! I'm guessing we might never be a large, but a PT. So I'm thinking of selling my 3 year olds stash once he is in trainers full time. He is a bigger guy and in Larges and was in XL for a short time but since he grew taler went back to larges!
Keep those PTs and switch to meds for the next 6 mos or so....
GL with your decision.