I made a points reservation for my wife at an Embassy Suites (I won't be there). The reservation is in my name with her as an additional guest since there doesn't seem any way to just have it in her name.

Can she do a digital check-in? If so, how? The reservation is not listed in her HH account and searching by reservation number and date shows nothing.

I suppose she could log in to the app as me, but that's odd since I won't be there. Or I could checkin and share the key with her (also odd since I won't be there). As a listed additional guest she should be able to check in at a desk, but digital is easier.