just be there for her maybe a bit more attention pick up some chores around the house she does. Give her some alone time to grieve
maybe at the same time just your 15 month old out somewhere different, you can give your wife some space too, playground you haven’t been too, ice cream or just out for a meal
give your self some time to grieve also
there are more people out there that have been through this the first trimester. 10 percent of all pregnancies miscarry in the first trimester. If you both feel comfortable don’t suffer alone confide in someone else to talk through it. There are also online support groups /r/twoxchromosomes was decent for this.
