Joel: Good idea, but 401(k) is maxed out already.
GardenFun: Yeah, we'd like to keep it in her name. It's sort of symbolic, but my MIL wants to give a gift to each of her kids. Still, I think we can work with this idea.
Bruhs: Appeasing MIL is a good idea for sure, but I think she'd go along with the total stock market fund. I already figured we'd just rebalance around her request. I was thinking more about the Admiral / Investor issue.
I think I'll fund $11k to her Roth for 2014 & 2015, throw the rest in my Roth for now and fund the remainder to hers out of savings in 2016. I had never converted from Investor to Admiral, so I didn't realize it was so easy. Sort of a non-issue. Thanks for your thoughts.