Get a bulk box of Kendall Curity 1" tape for her for Xmas and she can make a thin second skin tape glove every time she climbs.
Unless they've changed there sizing since I bought some 10 yrs ago, the smallest ones are huge. Jammies are like climbing with stick rubber sandals on your hands. For the same reason that loose shoes are annoying, having a piece of rubber slide back and forth even a little was even more frustrating than the girth.
I've come to prefer tape gloves over things like hand jammies. Instead of velcro closure its a simple piece of tape to close the wrist. I usually keep reusing tape gloves, adding tape (and peeling remnanants) as needed, till they start to stink. Then toss and make a new pair ;-)